for each package can be determined by invoking:
make show-var VARNAME=PKG_OPTIONS_VAR
The old options are still supported unless the variable named in
PKG_OPTIONS_VAR is set within make(1) (usually via /etc/mk.conf).
Common bugs fixed in Samba 3.0.3 include:
o Crash bugs and change notify issues in Samba's printing code.
o Honoring secondary group membership on domain member servers.
o TDB scalability issue surrounding the TDB_CLEAR_IF_FIRST flag.
o Substitution errors for %[UuGg] in smb.conf.
o winbindd crashes when using ADS security mode.
o SMB signing errors.
o Delays in winbindd startup caused by unnecessary
connections to trusted domain controllers.
o Various small memory leaks.
o Winbindd failing due to expired Kerberos tickets.
New features introduced in Samba 3.0.3 include:
o Improved support for i18n character sets.
o Support for account lockout policy based on
bad password attempts.
o Improved support for long password changes (>14
characters) and strong password enforcement.
o Support for Windows aliases (i.e. nested groups).
o Experimental support for storing DOS attribute on files
and folders in Extended Attributes.
o Support for local nested groups via winbindd.
o Specifying options to be passed directly to the CUPS libraries.
And more... please review "WHATSNEW.txt".
the RCD_SCRIPTS rc.d script(s) to the PLIST.
This GENERATE_PLIST idea is part of Greg A. Woods'
PR #22954.
This helps when the RC_SCRIPTS are installed to
a different ${RCD_SCRIPTS_EXAMPLEDIR}. (Later,
the default RCD_SCRIPTS_EXAMPLEDIR will be changed
to be more clear that they are the examples.)
These patches also remove the etc/rc.d/ scripts from PLISTs
(of packages that use RCD_SCRIPTS). (This also removes
now unused references from openssh* makefiles. Note that
qmail package has not been changed yet.)
I have been doing automatic PLIST registration for RC_SCRIPTS
for over a year. Not all of these packages have been tested,
but many have been tested and used.
Somethings maybe to do:
- a few packages still manually install the rc.d scripts to
hard-coded etc/rc.d. These need to be fixed.
- maybe remove from mk/${OPSYS}.pkg.dist mtree specifications too.
o Joining a Samba domain from Pre-SP2 Windows 2000 clients.
o Logging onto a Samba domain from Windows XP clients.
o Problems with the %U and %u smb.conf variables in relation to
Windows 9x/ME clients.
o Kerberos failures due to an invalid in memory keytab detection
test.
o Updates to the ntlm_auth tool.
o Fixes for various SMB signing errors.
o Better separation of WINS and DNS queries for domain controllers.
o Issues with nss_winbind FreeBSD and Solaris.
o Several crash bugs in smbd and winbindd.
o Output formatting fixes for smbclient for better compatibility
with scripts based on the 2.2 version.
finding cups if it's somewhere in your PATH. Explicitly pass configure
--disable-cups if USE_CUPS is not defined to avoid finding CUPS. Fixes
PR 24117 by David Brownlee.
* Building and installing the PAM modules if USE_PAM is defined.
* Installing the NSS loadable modules.
* Making the samba rc.d script run the winbindd script, too.
* Active Directory support. Samba is able to join a ADS realm as
a member server and authenticate using LDAP/Kerberos.
* Unicode support.
* New, more flexible authentication (passdb) system.
* A new "net" command that is similar to the "net" command in Windows.
* Samba now negotiates NT-style status32 codes on the wire, which
greatly improves error handling.
* Better Windows 2K/2K3/XP printing support.
* Loadable module support for passdb backends and character sets.
* More performant winbindd.
* Support for migrating from a Windows NT4 domain to a Samba domain
and maintaining user, group, and domain SIDs.
* Support for establishing trust relationships with Windows NT4 DCs.
* Initial support for a distributed Winbind architecture using an
LDAP directory for storing SID-to-uid/gid mappings.
* Major updates to the Samba documentation tree.
* Full support for client and server SMB signing to ensure
compatibility with default Windows 2K3 security settings.
* Improvement of ACL mapping features.
adduser and deluser scripts into ${PKG_SYSCONFDIR} that are capable of
dealing with usernames containing a "$". These scripts basically
accept the same options as useradd/userdel. They're meant to be used
in "add user script" and "delete user script" to deal with samba
machine accounts.
USE_PKGINSTALL is "YES". bsd.pkg.install.mk will no longer automatically
pick up a INSTALL/DEINSTALL script in the package directory and assume that
you want it for the corresponding *_EXTRA_TMPL variable.
* findsmb is a perl script, and we need to substitute the correct path to
the perl interpreter.
* Don't create ${PREFIX}/private during a "make install" as it's a
completely useless directory.
* Don't bother to install the completely outdated Samba HTML documentation
that is superseded by the Samba HOWTO Collection documentation.
Changes since 2.2.8:
Digital Defense, Inc. has alerted the Samba Team to a serious
vulnerability in all stable versions of Samba currently shipping.
The Common Vulnerabilities and Exposures (CVE) project has assigned
the ID CAN-2003-0201 to this defect.
This vulnerability, if exploited correctly, leads to an anonymous
user gaining root access on a Samba serving system. All versions
of Samba up to and including Samba 2.2.8 are vulnerable. An active
exploit of the bug has been reported in the wild.
****************************************
* IMPORTANT: Security bugfix for Samba *
****************************************
The SuSE security audit team, in particular Sebastian Krahmer
<krahmer@suse.de>, has found a flaw in the Samba main smbd code which
could allow an external attacker to remotely and anonymously gain
Super User (root) privileges on a server running a Samba server.
This flaw exists in previous versions of Samba from 2.0.x to 2.2.7a
inclusive. This is a serious problem and all sites should either
upgrade to Samba 2.2.8 immediately or prohibit access to TCP ports 139
and 445. Advice created by Andrew Tridgell, the leader of the Samba
Team, on how to protect an unpatched Samba server is given at the end
of this section.
The SMB/CIFS protocol implemented by Samba is vulnerable to many
attacks, even without specific security holes. The TCP ports 139 and
the new port 445 (used by Win2k and the Samba 3.0 alpha code in
particular) should never be exposed to untrusted networks.
O_RDWR fails in fcbopen case, remember the errno from previous open_file()
call and set errno back to this value if the second open_file() call
fails too
this makes samba report EACCESS instead of confusing ENOENT if creation
of file fails due to insufficient permissions for SMBcreate/SMBmknew call
bump package revision
have it be automatically included by bsd.pkg.mk if USE_PKGINSTALL is set
to "YES". This enforces the requirement that bsd.pkg.install.mk be
included at the end of a package Makefile. Idea suggested by Julio M.
Merino Vidal <jmmv at menta.net>.
1) Fix for smbclient reporting negative file sizes on dir command
and negative statistics being reported when using put or get
on large files.
2) Fix bug in determination of allocation size
3) Fix 64bit size problems which prevented copying of files larger
than 2 GBytes.
4) Fix for xcopy /s problem with old DOS clients not sending correct
attributes on subsequent SMBsearch calls.
5) Fix bug in call to standard_sub_advanced giving a 0 length. This
fixes the string overflow in string_sub errors.
6) Correctly handle querygroup rpcclient command
7) fix broken incremental tar in smbtar command
A security hole has been discovered in versions 2.2.2 through 2.2.6
of Samba that could potentially allow an attacker to gain root access
on the target machine. The word "potentially" is used because there
is no known exploit of this bug, and the Samba Team has not been able to
craft one ourselves. However, the seriousness of the problem warrants
this immediate 2.2.7 release.
1) ensure we send the notify message in the same way it is expected
to be received by srv_spoolss_receive_message().
2) attribute matching on truncate only matters when opening truncate
with current SYSTEM|HIDDEN -> NONE. It's fine to truncate on open
with current NONE -> SYSTEM | HIDDEN.
3) Fix bug in rpcclient's deldriver command
4) Don't set global_machine_password_needs_changing if
lp_machine_password_timeout() is set to zero
5) don't parse the BUFFER5 if the buffer length is zero
6) fix core dump if pdbedit is run as non-root or smbpasswd file does
not exist
7) Ensure can_delete() returns correct error code
8) correctly return NT_STATUS_DELETE_PENDING from open code
9) fix bug that assumed dos_unistr2 length was in ucs2 units, not bytes
10) check the long_archi name is not null when deleting a printer driver.
fixes core dump in smbd when using rpcclient's deldriver
11) fix fd leak with kernel change notify on Linux 2.4 kernels
12) must add one to the extra_data size to transfer the 0 string
terminator. This was causing "wbinfo --sequence" to access past the
end of malloced memory
13) fix for large systems allowing more than 65536 files open in
NTcreate&X
14) Fix bug in %U expansion
* Fixes for MS-RPC printing issues affecting Windows 2000 clients
* New support for smb.conf generation in SWAT
* Inclusion of several performance enhancements
* Fixes for several file locking bugs and returned status codes
and merge their patch collections. These two packages are built from the
same source tree, and updates to the main distfile should be shared by
both packages.
version 2.2.4nb1 is that there are the usual minor bug fixes, plus some
important ones:
* fix printing with Win2K/XP clients
* fixes related to using LDAP for the SAM
* fixes related to changing passwords
Pkgsrc changes:
* Fetch the .tar.bz2 file -- it's smaller.
* Use smb.conf.default as the sample config file and get rid of
the homegrown files/smb.conf.sample. smb.conf.default is more
informative and is a better resource.
* Remove irrelevant examples.
* Move convert_smbpasswd script to the examples/samba/misc
directory. It's pretty much outlived it's usefulness at this
point of the Samba release cycle.
WHAT'S NEW IN Samba 2.2.4 - 2nd May 2002
=========================================
This is the latest stable release of Samba. This is the version that all
production Samba servers should be running for all current bug-fixes.
There have been several fixes and internal enhancements which include:
* More/better SPOOLSS printing functionality for Windows
NT/2k/XP clients.
* Several fixes relating to serving PC database files such
as (Access and FoxPro) from a Samba file share.
* Several improves in Samba's VFS layer which can be seen
in the inclusion of a "Recycle Bin" vfs module. See
examples/VFS/README for more details on this.
* Addition of a tool (tdbbackup) for backup/restore of Samba's
tdb's
* Continued improvements to winbind for greater scalability
and stability
* Several fixes related to Samba's MS-DFS support
* Rpcclient's various printer commands now work (again)
New/Changed parameters in 2.2.4
--------------------------------
For more information on these parameters, see the man pages for
smb.conf(5).
Added/changed parameters
------------------------
* csc policy
* inherit acls
* nt status support
* lock spin count
* lock spin time
* pid directory
* winbind use default domain
Depreciated parameters
----------------------
The following parameters have been marked as depreciated
and will be removed in Samba 3.0
* postscript
* printer driver
* printer driver file
* printer driver location
Removed Parameters
------------------
none
Changes in 2.2.4
----------------
See the cvs log for SAMBA_2_2 for more details
1) added -c option to smbpasswd
2) reworked smbpasswd internal command line option parsing
3) small various bug fixes to experimental pdb_tdb.c
4) Enforce spoolss RPCs based on the access granted at PrinterOpen()
5) Added missing access checks to [add/delete/set]form
6) Compile fixes for pam_smbpass
7) fix smbd crash when netbios session request fails from
spoolss_connect_to_client().
8) fixed logic bug that prevent SetPrinter() from storing devmode
9) Removed extra get_printer_snum() calls from set_printer_hnd_name()
10) fix joining domain on big endian machine when using -U to smbpasswd
11) allow command line arg to override smb.conf log level
12) continue to retry to register 1b name with wins server if there is an old IP there
13) fix smbclient print crash bug
14) 9x pnp fix when the config file and driver file are different
15) force testparm to print the correct value for log level
16) fix swat to show full log level info
17) fix server GetPrinterData() fields to be more sensible
18) fix logic error in SetPrinterDataEx()
19) Only set smb_read_error if not already set
20) Fix string returns that require unicode
21) Merge of printing performance fixes from appliance
22) lpq parsing fixes
23) Back port tridge's xcopy /o fix from HEAD
24) Fix the printer change notify code (unfinished)
25) Patch for Domain users not showing up
26) Fixed SetPrinterData(magic key) to support zero length DEVMODE
27) Ensure that all methods of looking up and connecting to DC's work
using identical logic.
28) Merge in the mutex code to stop multiple domain logon failure
29) Ignore 0/0 lock
30) Fix winbindd to respect command line debuglevel as nmbd/smbd
31) Update with tdbbackup from HEAD
32) Fix for typo on solaris nss
33) Merge in the locking changes from HEAD
34) Added POSIX ACL layer into the vfs
35) Fix the returning of domain enum
36) Fix the generation of the MACHINE.SID file into the secrets.tdb.
37) Enable test for -rdynamic when building binaries
38) Remove the "stat open" code - make it inline
39) Fix the mp3 rename bug
40) Fix for Explorer DFS problems on older Windows 9X machines
41) implement OpenPrinter() opnum == 0x01
42) Matched W2K *insane* open semantics....
43) small fix that will prevent the "failed to marshall
R_NET_SAMLOGON" message in the logs
42) don't do checking of local passdb in smbpasswd if using -r option
43) fix "smbpasswd -j DOMAIN -r * -U Admin%XXXX" so that it doesn't
try to connect to a server named '*'
44) merge rpcclient code from HEAD
45) Ensure MACHINE.SID update done before child spawns
46) Fix the bad path errors for mkdir so mkdir \a\b\c\d works
47) Removed --with-vfs - always built if available
48) Fixed psec for 2.2
49) Fixed the handle leak in the connection management code
50) fix disable spoolss after the switch to nt status codes
51) Added Shirish's client side caching policy change
52) Honor the specversion when parsing the the DEVICEMODE
53) fix parsing bug when DEVICEMODE's private data does not end
on a 4 byte boundary
54) do not idle an smbd when there is an open pipe
55) when a new driver is added to a Samba server, cycle through
all printers and bump the change_id for each one bound to the driver
56) allow smbclient to work with a FIFO as well (needed for KDE
ioslave)
57) various updates to pdb_nisplus.c
58) many small documentation updates
59) removed many compiler warnings
Known Bugs
----------
* Under certain conditions when serving the MS Access 2000
executable file and an Access database from a Samba share,
it is possible to experience data corruption. This pug does
does occur when the database is served from a Samba file share
but the Access *.exe is stored on the client's local file system.
The exact reason for this bug is unknown at this time.
Change from 2.2.3
-----------------
This is a minor bugfix release for the 2.2.3 release. The 2.2.3
release had a problem that was visible to Windows 2000 Explorer
users in that copying files into a share that already existed
failed with "Access Denied" rather than asking the user if an
overwrite was required. This was due to an incorrect error mapping
between the UNIX EEXIST error code and the NT status error.
As Windows Explorer is a highly visible end user application a quick
bugfix release was required, hence 2.2.3a.
Compilation on HPUX versions earlier than HPUX 11 has also been
corrected.
The cvs.log file is no longer included with this release, as it adds
13Mb to the size of the release, and is easily available on the Web.
is not defined, as that is the only time when the smbpasswd file is
consulted. Also don't create a the smbpasswd file from /etc/passwd, as
that generates a lot of bad users, e.g. root, daemon, operator, etc.
Instead, just create an empty smbpasswd file and rely on the admin to add
approved users to the smbpasswd file using "smbpasswd -a".
(2) Add "piddir" as /var/run and "pidfile dir" and "pidfile directory"
statement for smb.conf.
(3) Some fix for password synchronization but it isn't tested much and
it is almost useless under "encrypt passwords = yes" environment.
Changes for INSTALL and part of Makefile are provided by
"Johnny C. Lam" <jlam@netbsd.org> and (2) and (3) are got
from FreeBSD ports.
Bump revision to 1; samba-2.2.3nb1 now.
According to Samba 2.2.3 release announcement:
Much work has been done on the LDAP backend code. The configure
option --with-ldapsam is now considered to be stable. The schema
used has changed, see the file examples/LDAP/samba.schema for the
new schema.
New documentation explaining how to set up a Samba only PDC/BDC
setup has been added in the files Samba-LDAP-HOWTO and Samba-BDC-HOWTO
in the documentation tree.
Changes in 2.2.3
-----------------
1). Fixed shared library compile for Solaris with native compiler.
2). UNIX CIFS extensions code added (donated by HP).
3). Changed to using NT status codes on the wire if the client can support this.
4). altname command to show 8.3 name added to smbclient.
5). const-safe endian macros now used.
6). client code now uses UNICODE on the wire.
7). Correctly return fault PDU's on bad handle.
8). Improved NT error code mapping table.
9). Many new point and print RPC calls added.
10). Win9x clients can now see full user list.
11). fileid added to identify simultaneous open files (no longer
use dev/inode/time as unique value).
12). HPUX ACL code added (donated by HP).
13). vfs interfaces updated (again !).
14). MSDOS Code Page 866 -> 1251 mapping added.
15). winbindd now processes quit/hup signals correctly.
16). No tdb traversal done on startup/shutdown - ensures scalability.
17). Fix bug with paths for homes share.
18). Fixed copyfile for OS/2.
19). Fix group membership when groups are on more than one line.
20). Fixed core dumps in posix ACL mapping code.
21). Tidyup of UNICODE functions (put/get).
22). Move rpcclient to the new libsmb code.
23). Add missing Windows 2000 passthough trans2 calls.
24). Return check all tdb calls.
25). Make local name lookup work even if wins server is down.
26). pam session code added to winbind.
27). Added winbindd cache to all lookups.
28). Fix allocate bugs that caused file sizes to be incorrect.
29). Fixed write cache code - now safe to use.
30). Fixed winbindd memory leaks.
31). winbindd will now do name lookups (to allow non Open Source
systems to do the nsswitch WINS lookup). Fixed by SGI.
32). passdb memory leaks fixed.
33). LDAP code updates and now properly maintained.
34). Finally figured out how changeid is meant to work.
35). Downlevel printing now looks as NT does in print monitor window.
36). Many fixups in spoolss printing RPC parsing.
37). Speed up password enumeration as a PDC.
38). Fix printer changed notify messages (work from HP).
39). Fix modify timestamp on close code.
40). Fix long standing mangled names bug.
41). Fix delete on close semantics.
42). Stop opening all files with O_NONBLOCK !
43). Use O_NOFOLLOW for systems that have it and don't want symlinks.
44). Ensure NT suplementary groups get added to user token.
45). Try and mitigate effects of DNS timeout (do less lookups).
46). Added current user connection context stack.
47). Fixes to utmp code.
48). smbw code tidyups.
49). Added tdb open log code. Several tdb fixes.
as they might not be there depending on whether INSTALL_RCD_SCRIPTS is set
in /etc/mk.conf when the package is built. Instead, assume that the other
rc.d scripts are in the same place as this "meta" script and locate them
using "dirname $0". Problem noted by Stoned Elipot <seb@netbsd.org> in
private email.
print/lprng, we make a new variable USE_CUPS that is used by packages to
determine whether depend on print/cups and to compile in support for CUPS.
USE_CUPS may be either "YES" or undefined. Deprecate SAMBA_WITH_CUPS as
its purpose is superseded by USE_CUPS. Convert net/samba and net/samba20
to use USE_CUPS and make x11/kdelibs2 respect USE_CUPS.
1.69, but some were remained.
Fix the problem that some data files are installed into root directory,
noted from Lennart Augustsson <lennart@augustsson.net> private mail.
This value may be customized in various ways:
PKG_SYSCONFBASE is the main config directory under which all package
configuration files are to be found.
PKG_SYSCONFSUBDIR is the subdirectory of PKG_SYSCONFBASE under which the
configuration files for a particular package may be found.
PKG_SYSCONFDIR.${PKGBASE} overrides the value of ${PKG_SYSCONFDIR} for a
particular package.
Users will typically want to set PKG_SYSCONFBASE to /etc, or accept the
default location of ${PREFIX}/etc.
This obsoletes the use of CONFDIR, which was active for only 6 days, so no
need to have a workaround to still accept old CONFDIR settings.
provided by Luke Mewburn <lukem@wasabisystems.com> with modifications by
me to allow running on older NetBSD systems (so any errors in the script
are mine alone).
scripts need for the nmbd and smbd programs to always start in daemom-mode,
which is why the "-D" flag was set via command_args in the scripts
themselves. Any additional options should be passed in through the
{nmbd,smbd}_flags settings in /etc/rc.conf. Add comments to reflect this
in the scripts.
The error reported by the PR author is most likely due to either installing
these scripts with ".sh" extensions, which is not how these are installed
into the ${PREFIX}/etc/rc.d and is definitely wrong, or in directly
sourcing these files from an rc.local script, which is again, definitely
wrong.
WHATS NEW IN Samba 2.2.1a: 11th July 2001
==========================================
This is the latest stable release of Samba. This is the version that all
production Samba servers should be running for all current bug-fixes.
This is a minor bugfix release for 2.2.1, *NOT* security related.
1). 2.2.1 had a bug where using smbpasswd -m to add a Windows NT or
Windows2000 machine into a Samba hosted PDC would fail due to our
stricter user name checking. We were disallowing user names
containing '$', which is needed when using smbpasswd to add a
machine into a domain. Automatically adding machines (using the
native Windows tools) into a Samba domain worked correctly.
2.2.1a fixes this single problem.
New/Changed parameters in 2.2.1
-------------------------------
Added parameters.
-----------------
obey pam restrictions
When Samba is configured to use PAM, turns on or off Samba checking
the PAM account restrictions. Defaults to off.
pam password change
When Samba is configured to use PAM, turns on or off Samba passing
the password changes to PAM. Defaults to off.
large readwrite
New option to allow new Windows 2000 large file (64k) streaming
read/write options. Needs a 64 bit underlying operating system
(for Linux use kernel 2.4 with glibc 2.2 or above). Can improve performance
by 10% with Windows 2000 clients. Defaults to off. Not as tested
as some other Samba code paths.
hide unreadable
Prevents clients from seeing the existance of files that cannot
be read. Off by default.
enhanced browsing
Turn on/off the enhanced Samba browing functionality (*1B names).
Default is "on". Can prevent eternal machines in workgroups when
WINS servers are not synchronised.
Removed parameters.
-------------------
domain groups
domain admin users
domain guest users
Changes in 2.2.1
-----------------
1). "find" command removed for smbclient. Internal code now used.
2). smbspool updates to retry connections from Michael Sweet.
3). Fix for mapping 8859-15 characters to UNICODE.
4). Changed "security=server" to try with invalid username to prevent
account lockouts.
5). Fixes to allow Windows 2000 SP2 clients to join a Samba PDC.
6). Support for Windows 9x Nexus tools to allow security changes from Win9x.
7). Two locking fixes added. Samba 2.2.1 now passes the Clarion network
lock tester tool for distributed databases.
8). Preliminary support added for Windows 2000 large file read/write SMBs.
9). Changed random number generator in Samba to prevent guess attacks.
10). Fixes for tdb corruption in connections.tdb and file locking brlock.tdb.
smbd's clean the tdb files on startup and shutdown.
11). Fixes for default ACLs on Solaris.
12). Tidyup of password entry caching code.
13). Correct shutdowns added for send fails. Helps tdb cleanup code.
14). Prevent invalid '/' characters in workgroup names.
15). Removed more static arrays in SAMR code.
16). Client code is now UNICODE on the wire.
17). Fix 2 second timstamp resolution everywhere if dos timestamp set to yes.
18). All tdb opens now going through logging function.
19). Add pam password changing and pam restrictions code.
20). Printer driver management improvements (delete driver).
21). Fix difference between NULL security descriptors and empty
security descriptors.
22). Fix SID returns for server roles.
23). Allow Windows 2000 mmc to view and set Samba share security descriptors.
24). Allow smbcontrol to forcibly disconnect a share.
25). tdb fixes for HPUX, OpenBSD and other OS's that don't have a coherent
mmap/file read/write cache.
26). Fix race condition in returning create disposition for file create/open.
27). Fix NT rewriting of security descriptors to their canonical form for
ACLs.
28). Fix for Samba running on top of Linux VFAT ftruncate bug.
29). Swat fixes for being run with xinetd that doesn't set the umask.
30). Fix for slow writes with Win9x Explorer clients. Emulates Microsoft
TCP stack early ack specification error.
31). Changed lock & persistant tdb directory to /var/cache/samba by default on
RedHat and Mandrake as they clear the /var/lock/samba directory on reboot.
WHATS NEW IN Samba 2.2.0a: 23rd June 2001
==========================================
SECURITY FIX
============
This is a security bugfix release for Samba 2.2.0. This release provides the
following two changes *ONLY* from the 2.2.0 release.
1). Fix for the security hole discovered by Michal Zalewski (lcamtuf@bos.bindview.com)
and described in the security advisory below.
2). Fix for the hosts allow/hosts deny parameters not being honoured.
No other changes are being made for this release to ensure a security fix only.
For new functionality (including these security fixes) download Samba 2.2.1
when it is available.
The security advisory follows :
IMPORTANT: Security bugfix for Samba
------------------------------------
June 23rd 2001
Summary
-------
A serious security hole has been discovered in all versions of Samba
that allows an attacker to gain root access on the target machine for
certain types of common Samba configuration.
The immediate fix is to edit your smb.conf configuration file and
remove all occurances of the macro "%m". Replacing occurances of %m
with %I is probably the best solution for most sites.
Details
-------
A remote attacker can use a netbios name containing unix path
characters which will then be substituted into the %m macro wherever
it occurs in smb.conf. This can be used to cause Samba to create a log
file on top of an important system file, which in turn can be used to
compromise security on the server.
The most commonly used configuration option that can be vulnerable to
this attack is the "log file" option. The default value for this
option is VARDIR/log.smbd. If the default is used then Samba is not
vulnerable to this attack.
The security hole occurs when a log file option like the following is
used:
log file = /var/log/samba/%m.log
In that case the attacker can use a locally created symbolic link to
overwrite any file on the system. This requires local access to the
server.
If your Samba configuration has something like the following:
log file = /var/log/samba/%m
Then the attacker could successfully compromise your server remotely
as no symbolic link is required. This type of configuration is very
rare.
The most commonly used log file configuration containing %m is the
distributed in the sample configuration file that comes with Samba:
log file = /var/log/samba/log.%m
in that case your machine is not vulnerable to this attack unless you
happen to have a subdirectory in /var/log/samba/ which starts with the
prefix "log."
Credit
------
Thanks to Michal Zalewski (lcamtuf@bos.bindview.com) for finding this
vulnerability.
New Release
-----------
While we recommend that vulnerable sites immediately change their
smb.conf configuration file to prevent the attack we will also be
making new releases of Samba within the next 24 hours to properly fix
the problem. Please see http://www.samba.org/ for the new releases.
Please report any attacks to the appropriate authority.
The Samba Team
security@samba.org
entry to prevent finding libncurses and unnecessary patches to configure
script to handle SSL location and probing libcups. Also use FILES_SUBST
instead of repeating a sed script throughout the Makefile.
CXXFLAGS, and LDFLAGS by the buildlink.mk files so remove the extra
definitions to add them from the package Makefiles. As advised by the
bsd.buildlink.mk file, also ensure that the buildlink.mk files are
included prior to defining any package-specific CFLAGS/LDFLAGS to ensure
that the buildlink directories are at the head of the compiler search
paths.
-I${BUILDLINK}/include through via CPPFLAGS as well as CFLAGS to ensure
that readline/readline.h is found by the configure script. Fixes
pkg/13110 by Jesse Off.
were previously enlarged by the sequence: lseek, write, munmap, mmap
and are now enlarged by: munmap, lseek, write, mmap.
The Samba team is already aware of the problem. I expect this patch will
be incorporated in a future release.
Use BUILDLINK_INCDIR, BUILDLINK_LIBDIR for locations of linked headers
and libraries. Create a variable BUILDLINK_TARGETS whose value is the
list of build-link targets to execute.
* Integration between Windows oplocks and NFS file opens (IRIX and Linux
2.4 kernel only). This gives complete data and locking integrity between
Windows and UNIX file access to the same data files.
* Ability to act as an authentication source for Windows 2000 clients as
well as for NT4.x clients.
* Integration with the winbind daemon that provides a single
sign on facility for UNIX servers in Windows 2000/NT4 networks
driven by a Windows 2000/NT4 PDC.
* Support for native Windows 2000/NT4 printing RPCs. This includes
support for automatic printer driver download.
* Support for server supported Access Control Lists (ACLs).
* On PAM (Pluggable Authentication Module) based systems - better debugging
messages and encrypted password users now have access control verified via
PAM - Note: Authentication still uses the encrypted password database.
* Rewritten internal locking semantics for more robustness.
This release supports full 64 bit locking semantics on all
(even 32 bit) platforms. SMB locks are mapped onto POSIX
locks (32 bit or 64 bit) as the underlying system allows.
* Conversion of various internal flat data structures to use
database records for increased performance and
flexibility.
* Support for acting as a MS-DFS (Distributed File System) server.
* Support for manipulating Samba shares using Windows client tools
(server manager). Per share security can be set using these tools
and Samba will obey the access restrictions applied.
* Samba profiling support
* Compile time option for enabling a (Virtual file system) VFS layer
to allow non-disk resources to be exported as Windows filesystems
(such as databases etc.).
Samba 2.0.9 is a security bugfix release which correctly fixes the problem
2.0.8 was supposed to address. (A bug in the handling of temporary files
that allowed local users to destroy data on local devices).
Samba 2.0.8 is a security bugfix release. Previous versions of Samba
had a bug with the handling of temporary files that allows local users
to destroy data on local devices. This bug was discovered during a
routine security audit by Caldera. While no exploitation of this bug
is known to have occurred it is fairly easy to exploit so sites with
untrusted local users should take the threat seriously.
Unfortunately we lose japanese language support by this update.
first component is now a package name+version/pattern, no more
executable/patchname/whatnot.
While there, introduce BUILD_USES_MSGFMT as shorthand to pull in
devel/gettext unless /usr/bin/msgfmt exists (i.e. on post-1.5 -current).
Patch by Alistair Crooks <agc@netbsd.org>
supplied by Osamu OISHI <oishi@ims.ac.jp>.
Changes from 2.0.7.1.2a to 2.0.7.1.3:
- fixed bug that caused garbled output in browsing when
Samba was LMB.
- fixed bug that wrong file name length is sent to client in
short file name. It fixes bug that MS Access cannot run
under NT4 environment.
- multibyte characters are now allowed at fstype in
smb.conf.
- fixed bug that wrong string length is sent to client when
multibyte characters are used in Volume name.
- fixed bug that one extra memory block allocated in every
time and wasted it.
- included tools for administrating e.g. Coding System
modifier, replacement of `ls' or `cd' when CAP/HEX Coding
System is used.
- fixed bug about utmp.
complete list of changes can be found at http://www.samba.org/.
New Documentation in 2.0.7
--------------------------
O'Reilly and Associates have donated their book "Using Samba"
to the Samba community to be updated in a collaberative way
along with the Samba software. Starting with this release the
html of "Using Samba" will be distributed with the Samba software
as the online documentation for Samba. Bug fixes for the book
are encouraged as is new material. Please help us make this
documentation the best it can be for Samba !
Windows 2000 Issues
-------------------
This version of Samba has been tested with Windows 2000 and
the five known incompatibilities with Windows 2000 have been
fixed. See the "Changes in 2.0.7" list below for details.
New/Changed parameters in 2.0.7
-------------------------------
There are 5 new parameters in the smb.conf file.
utmp
utmp dir
utmp hostname
utmp consolidate
wtmp directory
These parameters are only available if the "--with-utmp"
option was selected at configure time. The yes/no option "utmp"
specifies whether utmp records should be recorded on user
logon/logoff. It defaults to "no". The "utmp dir" and "wtmp dir"
are string parameters specifying pathnames to the directories containing
the utmp/wtmp file databases. See the smb.conf man page for more details.
inherit permissions
This boolean parameter causes newly created files and directories
to inherit their initial permissions from their parent directory.
This can be very useful in propagating such things as the set-group
bit in directory heirarchies. See the smb.conf man page for more
details.
write cache size
This integer parameter specifies (in bytes) the size of a user level
per-file write cache that smbd will create for an oplocked file. This
can improve performance significantly for writing files by causing
writes to be done in large chunk sizes. If this parameter is set (it
defaults to zero which means no write cache) to the stripe size of
a raid volume then it will cause writes to be much more efficient.
Up to 10 write caches can be active simultaneously per smbd (allocated
for the first 10 oplocked file opens). All normal warnings about the
dangers of user level caching of data apply. See the smb.conf man page
for more details.
source environment
This pathname parameter causes Samba to read a list of environment
variables from a named file on startup. This can be useful in setting
up Samba in a clustered environment. See the smb.conf man page for more
details.
Ability to delete users added
-----------------------------
SWAT and smbpasswd can now delete users from the Samba smbpasswd file.
See the man page for smbpasswd for details.
Roving profile behavior finalized
---------------------------------
The change in behavior with roving profiles (using the "logon home"
parameter instead of the "logon path" parameter) introduced in 2.0.6
has been discovered to be consistant with the way Windows NT behaves,
and has been left as the default action. Please see the additional
notes in the "logon home" parameter description in the smb.conf man
page for more details.
* It turns out -lreadline also needs -ltermcap to link under ELF. I had
to patch the GNU configure script to make it correctly detect readline.
Are we going to have to do this to all the packages which depend upon
readline?
New/Changed parameters in 2.0.6
-------------------------------
There are 6 new parameters in the smb.conf file.
wins hook
This parameter allows an external program to be called
on all changes to a Samba WINS database, allowing dynamic
DNS updates.
debug hires timestamp
debug pid
debug uid
The above 3 parameters provide greater debug information.
preexec close
rootpreexec close
The above 2 parameters control the action taken on the
success or failure of a 'preexec' script.
There is also one removed parameter.
mangle locks
The addition of these new parameters and the removal of the old
is described in more detail in the smb.conf man page,
When using "security=domain" the "password server"
parameter can now be set to the string "*', which will
cause Samba to search for Domain controllers in the
same way that Windows NT does. See the smb.conf man
page for more details.
The "interfaces" parameter in smb.conf can now be dynamically
detected on startup and can also now take an interface name
such as eth0. See the smb.conf man page for the details
on the new features of the "interfaces" parameter.
nmbd has been enhanced to use this feature.
The syntax for the Linux-specific smbmount command has been changed
and is now compatible with the standard mount command. See the modified
smbmount man page for details.
Support for the UNIX CUPS printer standard has been added.
See www.cups.org for details. Thanks to the folks at Easy Software
Products for this code. Set the printcap name to "cups" to
enable this. See the smb.conf man page for details.
Changes in 2.0.6
-----------------
1). 64-bit locking removed from Linux autoconf build. This fixes
several Linux specific locking issues.
2). Crash bug fix in smbclient recursive processing. Fix from
E. Jay Berkenbilt (ejb@ql.org).
3). "history" command added to smbclient if readline available.
4). smbtar - updates files and directory message on restore.
5). smbmnt - 'u', 'g', 'r', 'f', 'd' options added by Andrew. See
man page for details.
6). smbmount updated to be useable by autofs on Linux. See the
samba/examples/autofs/README file for details.
7). Bug fixed where TCP_NODELAY was not being used by default in smbd.
8). Many oplock fixes. Samba now waits 30 seconds, not 45. Also
smbd no longer aborts on client break failure, but logs a message
and continues. This is what NT does. This should fix many "oplock
break" message problems people have been having.
9). New code from Andrew to dynamically detect interfaces. nmbd will
now attempt to dynamically detect interface changes and register names
as an interface goes "up".
10). Win95 ioctl for print jobs added by Matt.
11). Mapping for ISO8859-1 extended for codepage 437 and 850.
12). Code Page 737 -> ISO-8859-7 (Greek-Hellenic) mapping added.
13). Character strings now correctly converted from UNIX character set
format to DOS codepage when read from smb.conf or external passwd or
group files. Samba is now much more careful about what format external
strings should be converted to/from.
14). snprintf crash fix for IRIX 6.2 and below.
15). Increased timestamp debug fixes (adds milliseconds and uid/pid if
requested).
16). Optimisation for wildcard exact match requests.
17). Win95 wildcard semantics fix - unused code removed.
18). 'mangle locks' parameter removed. This now done automatically.
19). setXid() routines re-written to provide asserts and also to fix
AIX versions prior to 4.1.x.
20). MSG_WAITALL optimisation removed due to bugs in FreeBSD.
21). Length fix when writing UNICODE string.
22). oplock processing added to libsmb client code.
23). Added more client error message strings.
24). Fix bug with connecting to encrypted server when non-encrypted
password given.
25). In security=domain, password server extended to search for DC's
if parameter = '*'.
26). "root did not create samaphore" bug fixed.
27). random generator initialized early to prevent icons not showing
up in Win9x.
28). Logging fix after SIGHUP.
29). WINS hook external call added when nmbd is a WINS server.
30). Support for CUPS printer protocol added by Michael Sweet.
31). Support for NIS+ backend password database updates.
32). Handle dashes in print job id's. Fix from Dom.Mitchell@palmerharvey.co.uk
33). Race condition in UNIX password sync on some platforms fixed by Matt.
34). Dirptr leak from Win98 fixed.
35). Logic bug in handling of level II oplocks fixed.
36). smbd crash bug fix when opening directories.
37). Paranoia oplock fix from Charles Hoch (hoch@exemplary.com)
38). Fix Win2k problem where DCE/RPC is done on SMBwrite as well as SMBwriteX.
39). Fix Win95 redirector alignment bug that caused oplock break failures.
40). Preexec close code added.
41). Extra sanity checks in testparm code.
42). oplock tests added to smbtorture.
43). Tell SWAT user if logged in as root or not.
44). Solaris packaging fixes donated by VERITAS.
build a binary package with this definition would fail as the PLIST is
not correct.
If a package's documentation is overwhelming, it should arguably be handled
in a separate pre-requisite documentation package.
While here clean up the package somewhat:
- Remove confusion about where the SAMBA_PRIVATE directory is.
- Don't gratitously create yet another world writeable directory.
- Don't use $PREFIX as the WEB_ROOT, use the htdocs directory from the
Apache pkg instead.
- Enable use of netgroups, checking of disk quotas and the password
changing feature.
- Use /var/run/samba for runtime status files.
- Always install the example startup file.
- Misc. minor modification for better maintainability.
- New, optional Makefile variable HOMEPAGE, specifies a URL for
the home page of the software if it has one.
- The value of HOMEPAGE is used to add a link from the
README.html files.
- pkglint updated to know about it. The "correct" location for
HOMEPAGE in the Makefile is after MAINTAINER, in that same
section.
This version unites the samba and the uncommitted samba-des packages,
as it includes a "castrated" DES implementation that is only usable as
a hash function.
Some very minor typos in the description file corrected by myself.
collection, thanks to Ty Sarna (tsarna@endicor.com), and addresses the
first part of PR pkg/4746.
The Samba software suite is a collection of programs that implements
the SMB protocol for UNIX systems.
