2005-03-10 - Snort 2.3.2 Released
* Removed end-of-line parser fix in favor of completely reworking
this at the next parser overhaul.
2005-03-09 - Snort 2.3.1 Released
* Fixed issue where the number of flowbits were too small. Thanks Marc
Norton for the fix.
* Fixed parsing of comments at end of line in config file. In
snort.conf, anything that follows a # on a line is considered a
comment. Thanks Steve Sturges for the fix.
* Fixed alignment issue causing sfPortscan to crash on Solaris/HPUX.
Thanks Andy Mullican for the fix. Thanks Senthil Prabu.S and
Jonathan Miner for working with us on this.
2005-01-25 - Snort 2.3.0 Final Released
* Fixed issue with sfPortscan reporting incorrect IP datagram length.
Thanks Jon Hart for the test case and finding the bug, and Marc Norton
for resolving the issue.
* Threshold/Suppression now prints properly when logging to syslog.
Thanks Sekure for pointing out the problem. Thanks Steve Sturges for
working on the fix.
* Threshold memcap argument now correctly handles non-integer input.
Thanks nnposter for the patch.
* Fixed issue reported by Allan Jensen, where on MacOS X, ppp links were
not decoded properly. Thanks Dan Roelker for the fix.
* Snort manual and FAQ are updated for 2.3. Thanks Jen Harvey for your
work on putting it all together.
2004-12-15 - Snort 2.3.0 RC2 Released
* Small performance improvement to arpspoof and also fixed a problem
where the list of configured IP/MAC entries would contain only one
entry and leaked memory (Jeff Nathan).
* Fixed a problem affecting MacOS X where linking may fail with
non-standard libraries when global symbols are encountered multiple
times (Jeff Nathan).
* Ignore RST|ACK midstream pickup case so we don't get an evasive TCP
alerts. Thanks for the report, Sekure. Thanks Dan Roelker for the fix.
* Moved CheckLogDir() to after parsing snort.conf (for IDS mode) so the
logdir config will work if the default or command-line logdir does not
exist on the system. Thanks Dan Roelker.
* Fixed bug when setting the doe_ptr on a successful pcre match.
It is now set relative to base_ptr. Thanks Steve Sturges for the
fix.
* Added from_beginning and multiplier options for byte_jump.
from_beginning skips bytes from the beginning of the content,
instead of from the location immediately following the number
of bytes to skip. multiplier takes a numeric argument, and
skips x times that number of bytes. Thanks again to Steve Sturges.
* In "fast" output, now log only actual packet contents when UDP
data length is greater than actual data length. Thanks Brian
Caswell for spotting this, and Andrew Mullican for working on the fix.
* Please check the ChangeLog for further details.
2004-11-18 - Snort 2.3.0 RC1 Released
* Added IPS functionality from Snort-Inline. A big thanks to the
Snort-Inline guys (Jed Haile, Rob McMillen, William Metcalf, and Victor
Julien). Also, Thanks Dan Roelker for doing the integrating of
Snort-Inline into the official Snort project.
* Added new portscan detector. The design and implementation was headed
up by Dan Roelker, and included Marc Norton and Jeremy Hewlett.
* Numerous changes for better 64bit Snort support from Jeremy Hewlett and
Marc Norton. Additionally, an --enable-64bit-gcc option was added to
configure. However, there are still some memory alignment issues to
work out before 64bit mode is fully functional, patches are welcomed.
Thanks Chris Baker for doing 64bit testing.
* Added not_established keyword to the flow detection option. This allows
snort to do dynamic firewall rulesets. Experimental for now.
* Added an enforce_state keyword to stream4 so we won't pick up midstream
sessions. This works well for asynchronous links and also for
just monitoring legitimate traffic.
* Relocated ./contrib files to http://www.snort.org/dl/contrib as many
are not maintained by Sourcefire and are out of date. The rpm and
schema files have been relocated in their respective 'rpm' and 'schemas'
directories under the snort parent directory.
* perfmonitor config line can now be configured with "accumulate" or
"reset." Thanks Marc Norton for the feature, and Barry Basselgia for
pointing out the issue. Thanks Scott Dexter and Andreas Ostling for
doing some initial testing.
* Fixed 64-bit bug in sfmemcap.c found and tested by Ryan Matteson
and Clay McClure. Thanks guys.
* Fixed reference times to match log time for first packet, for an event
generated by a reassembled packet. Incremented event ID to give
unique ID for each packet. Also made unified logging compatible with
Windows. Thanks Andrew Mullican for the fix.
* Fixed linux perfmonitoring stats for the 2.6 kernel. Thanks to
everyone that reported this bug. Thanks Dan Roelker for the fix.
* Get thresholding/suppression to work for alerts that do not
contain an ip header (primarily decode alerts). Thanks
Brian Caswell.
* Fix conditions where snort would log double web alerts that
contained only content options (no uricontents). Thanks to kawa for
finding and reporting this bug.
* Fix suppression/thresholding bug for non-rule alerts. Thanks to
Alex Butcher for reporting it to us.
* Many other bug fixes, please check the ChangeLog for details.
under share/examples/rc.d. The variable name already was named
RCD_SCRIPTS_EXAMPLEDIR.
This is from ideas from Greg Woods and others.
Also bumped PKGREVISION for all packages using RCD_SCRIPTS mechanism
(as requested by wiz).
under ${PREFIX} instead of being an absolute path.
So fix the references using RCD_SCRIPTS_EXAMPLEDIR to be
${PREFIX}/${RCD_SCRIPTS_EXAMPLEDIR}.
This should have no changes to use before.
Please note that the MESSAGE files in most cases are wrong in the
first place. We have automated mechanisms and could have an automated
message for explaining rc.d script usage. (This is something to do!)
- ok'ed snj@, wiz@
- Install database scripts which goes a part-way to addressing PR 18996
Updated database schema diagram from Chris Reid. Schema can be found in
./doc/snort_schema_v106.pdf
Added --include-pcre* configuration option to help cross compiling. Thanks
Erik de Castro Lopo.
Fixed thresholding/suppression issue with queuing multiple events per packet.
Thanks Andreas Ostling.
When a rebuilt stream causes an alert, log out the original packets instead of
the rebuilt packet. Thanks sekure@gmail.com for the report.
Turned off http_inspect alerts that were causing false positives in the preset
webserver profiles (Thanks Dan Roelker).
Turn off encoding alerts in HTTP parameter field. The parameter field is still
normalized, it just doesn't alert. This helps reduce alerts that are generated
from complex parameter queries (Thanks Dan Roelker).
Fixed memory leak in "fast" output. Thanks for your bug report
sekure@gmail.com.
Clear error code which under Windows was causing a subsequent false failure in
parsing threshold rules. (Thanks to Rich Adamson)
Further details can be found in Changelog and RELEASE.NOTES.
- Grab maintainership of the package (with ok of previous owner)
- Use SUBST_* code
Ok'ed wiz@, snj@, salo@
From the changelog:
2004-05-06 Daniel Roelker <droelker@sourcefire.com>
* src/detection-plugins/sp_pattern_match.c:
Fixed rule read up error when parsing hexmode content options.
Thanks for pointing it out Toni Maatta. (Roelker)
* src/preprocessors/spp_stream4.c:
Fixed null pointer dereference when detect_scans were enabled and
creating a new session that had funky flags. Thanks to Chad
Kreimendahl for reporting the bug and testing the fix. (Roelker)
2004-04-20 Daniel Roelker <droelker@sourcefire.com>
* src/event_queue.c:
* src/event_queue.h:
* src/sfutil/sfeventq.c:
* src/sfutil/sfeventq.h:
Added multi-event queueing in Snort. Snort now supports logging
multiple events per packet, and prioritizing those events using
different methods. Thanks to H.D. Moore for illustrating event
obfuscations when snort only logged one event per packet. (Roelker)
* src/snort.c:
* src/decode.c:
* src/detect.c:
* src/fpcreate.c:
* src/fpdetect.c:
* src/preprocessors/spp_arpspoof.c:
* src/preprocessors/spp_bo.c:
* src/preprocessors/spp_frag2.c:
* src/preprocessors/snort_httpinspect.c:
* src/preprocessors/spp_rpc_decode.c:
* src/preprocessors/spp_stream4.c:
Updated event generators to use new event queueing sytem. (Roelker)
* src/output-plugins/spo_alert_fast.c:
Added newline to 'cmg' alert output, so IP decode is easier to
read. (Roelker)
* src/output-plugins/spo_database.c:
Updated how current/utc times are calculated, as well as how they are
formatted, thanks Marcus Janoski. (Reid)
* src/parser.c:
Error on unterminated IP lists. Added 'config event_queue' parameter.
Configuration changes to 'config checksum_mode' for specifying
which checksums to do. (Norton)
* src/plugbase.h:
Fixes from Chris Reid for timestamp routines. (Reid)
* src/tag.c:
Revert to old tag functionality. Will add proposed tagging
configurations in the future. (Roelker)
which installs to ${RCD_SCRIPTS_EXAMPLEDIR}. But the MESSAGE
referred to wrong hard-coded location if the RCD_SCRIPTS_EXAMPLEDIR
was not the default. So use RCD_SCRIPTS_EXAMPLEDIR instead.
PKGREVISION not bumped because if someone had changed
RCD_SCRIPTS_EXAMPLEDIR before recent change of autoregistration
of rc.d script in PLIST, then it could not have been packaged
in first place.
Note that this commit does not imply that the MESSAGE is correct.
In some cases, the MESSAGE is clearly wrong such as suggesting
running the rc.d script from the example directory (which will work
although).
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.
While here, convert to buildlink3.
Changes:
* Various portability fixes.
* Fixed conversation parsing faults so users can operate this
preprocessor
* Detect non-rfc standard chunk encodings. Detect abnormal HTTP
requests with newlines, spaces, etc. before the request method.
* Fix negative stats output on snort exit or SIGUSR1.
* Removed escaping of '%' and '_' characters in MySQL
* Various documentation fixes/updates.
* Added Flowbits detection functionality.
* Added utility to parse out perfmon stats.
* Tagged Packets no longer have NULL msg name.
* Fixed http_inspect double alerting on pkts and rebuilt streams.
* http_inspect proxy_alert now supports normal proxy networks setups.
http_inspect default server only valid if specified in config.
* Close Socket when Snort receives SIGHUP.
* Added GID, SID, and Rev to csv output.
* config chroot readded.
* Added additional error checking for custom rules.
* Flow now honors -q (quiet).
* Removed non_rfc_chars from default profiles.
* Added suppression negation.
* Better support for ODBC. Better memory management. Improved escaping
of SQL strings.
* Other miscellaneous bugfixes.
Changes:
2.1.0:
======
- A new connection tracking module, Flow (replaces conversation)
- A new portscan detector based off of Flow, Flow-Portscan (replaces
portscan2)
- A new http preprocessor, HttpInspect (replaces http_decode)
- Alert Thresholding and Suppression
- PCRE rule keyword (Perl Compat Regular Expressions)
- isdataat rule keyword (buffer length detection)
- A ton of new and updated rules.
2.0.6:
======
- 64-bit update for detection engine. (Thanks, Silio d'Angelo)
- Added better PPP decoding. (Thanks Jesper Peterson)
- Updated ip_proto optimization for high-speed detection engine.
- Fixed infinite loop problem that was introduced by the recursive pattern
matching patch. Reported by Lawrence Reed, thanks for testing out the
changes for us!
- Various changes to help respond (version 1) work a little better.
- spp_http_decode 64-bit patch from Dirk Mueller.
- Out-of-order ACK problem from Andrew Rucker. Also, updated stream4 to the
most recent version from HEAD.
- Minor fixes to tagging related to 'src' and 'dst' directives
- When counting one byte patterns in 'ningroup' added a check for
psLen==1 (wu-manber pattern matcher). Thanks Josh Sakofsky and Dennis
McGuire for helping us test this.
2.0.5:
======
- Stream4 fixes from Andrew Rucker Jones.
- Allow memcap to be configured for threshold features.
2.0.4:
======
- Fixed a core dump introduced with 2.0.3 when dealing with negated patterns
2.0.3:
======
- doe_ptr handling in byte_test/byte_jump slightly modified to work
better with the pcre patch
- content processing is now recursive to make distance/within processing
better ( thanks to Shai Rubin for patch! )
- fixed a bug in the mwm.c pattern matcher that resulted in some alerts
not firing in a particular configuration of rules
2.0.2:
======
- Added Thresholding and Suppression features (Marc Norton/Sourcefire)
- Fixed TCP RST processing bug found (Shai Rubin)
- Cleanup of spp_arpspoof (Jeff Nathan)
- Cleanup of win32 version including proper Event Log support (Chris Reid)
- Munged data fixes for stream4 (Chris Green)
Patch from Adrian Portelli via PR pkg/22900.
Changes:
- Added Thresholding and Suppression features (Marc Norton/Sourcefire)
- Fixed TCP RST processing bug found (Shai Rubin)
- Cleanup of spp_arpspoof (Jeff Nathan)
- Cleanup of win32 version including proper Event Log support (Chris Reid)
- Munged data fixes for stream4 (Chris Green)
Changes:
- fix host endianess problem in udp decoder
- vlan decoding fixes from Michael Pomraning
- add tcp state checking to httpflow
- ignoring bad checksums throughout snort if checksumming is turned on
- config disable_ttcp_alerts is now also config disable_tcpopt_ttcp_alerts
- better initialization handling of low memory conditions pointing to the
- low memory search engine
- byte_jump / byte_test 2 byte cases handled and unified
- correctly assign port numbers on tcpoption events
- pass rule logic changed to "win" in specific multiple event cases
- named interface support for win32 from the winpcap folks
- spp_bo now also will work with log-only output plugins
- added window detection plugin documentation to manual
- lots of new rules and tons of rule documentation
IMPORTANT: This version fixes remotely exploitable heap overflow in the stream4
preprocessor module.
Advisory: http://www.coresecurity.com/common/showdoc.php?idx=313&idxseccion=10
Changes:
2.0.0:
======
- Enhanced high-performance detection engine
- Stateful Pattern Matching
- New detection keywords: byte_test & byte_jump
- The Snort code base has undergone an external third party professional
security audit funded by Sourcefire (http://www.sourcefire.com)
- Many new and updated rules
- snort.conf has been updated
- Enhancements to self preservation mechanisms in stream4 and frag2
- State tracking fixes in stream4
- New HTTP flow analyzer
- Enhanced protocol decoding (TCP options, 802.1q, etc)
- Enhanced protocol anomaly detection (IP, TCP, UDP, ICMP, RPC, HTTP, etc)
- Enhanced flexresp mode for real-time TCP session sniping
- Better chroot()'ing
- Tagging system updated
- Several million bugs addressed....
- Updated FAQ (thanks to Erek Adams and Dragos Ruiu) Snort 2.0 can be
downloaded at http://www.snort.org/dl/snort-2.0.0.tar.gz. Binary
versions of the codebase will be built over the next several days and
made available at here.
2.0.rc4:
========
- byte_jump/byte_test don't force relative content options
- byte_jump/byte_test absolute offsets work
- Better FIN handling in Stream4
2.0.rc3:
========
- A low memory usage detection method (enabled via "config detection:
search-method lowmem")
- Moved the default unix socket location to LOGDIR
2.0.rc2:
========
- syslog should work on win32 and unix
- major tagging updates
- new UDP decoding alerts
- snort.conf updates
2.0.rc1:
========
- Higher performance (due to a new pattern matcher and rebuilt detection
engine)
- Better decoders
- Enhanced stream reassembly and defragmentation
- Tons of bug fixes
- Updated rules
- Updated snort.conf
- New detection keywords (byte_test, byte_jump, distance, within) &
stateful pattern matching
- New HTTP flow analyzer
- Enhanced anomaly detection (HTTP, RPC, TCP, IP, etc)
- Better self preservation in stateful subsystems
- Xrefs fixed
- Flexresp works faster and more effectively
- Better chroot()'ing
- Fixed 802.1q decoding
- Better async state handling
- New alerting option: -A cmg!!
This version fixes the buffer overflow issue noted in:
http://www.kb.cert.org/vuls/id/916785
Changes:
- follow PKG_SYSCONFDIR
- added rc.d script
- create own user and group
- added MESSAGE with post-install instructions
- removed DEINSTALL
- minor cleanups (this package was really half-baked..)
1.9.1:
======
- src/preprocessors/spp_rpc_decode.c (PreprocRpcDecode):
- alignment errors on non-x86 platforms
- added new space delimited options
alert_fragments
no_alert_multiple_requests
no_alert_large_fragments
no_alert_incomplete
- corrected buffer overflow in fragment normalization
- src/snort.c
- Win32 '-s' parameter wasn't configured to accept an optarg,
but code expected one, causing null-pointer violation.
- Backport of 2.0 fixes for stream4 ( off by one errors on reassembly )
Changes:
The main purpose of this release is a stable target with many fragroute
and tcp connection oriented fixes. This is also the last release of the
1.8.7 line and signals the start of the beta cycle for the 1.9 branch.
<mipam@ibb.net>. From the release notes:
1.8.4 and 1.8.5 both had bugs that were found right as we were ready
to do a full release and represented good midway points but 1.8.6
should be the stable target.
Changes include:
* The ICMP decoders have been rewritten.
* (This is a summary of recent changes -- not all mine)
* Fixed stream4 offset initialization
* Double Open of snort log file
* Lots of new rules
* Fatal error on problems other than -> and <>
* Fixed stream4 several low memory conditions
* Error checking in stream4/frag2 argument parsing
* snort-db schema updates to 1.05
* --with-pcap-includes should now look at specified pcap
* packet statistics now should be more accurate with regards to lost
frags
* double PID file write
* S4 alignment problems on SPARC fixed ( rpc_decode still has SPARC
alignment errors )
* new snmptrap code
* documentation updates
* Stability fixes in frag2
* SEQ / ACK checking should be correct
* Reassembled packets with stream4 will now also be inspected when
using -z est
* ip fragments are now calculated correctly
* rule headers correctly matched
( multiple CIDR performance greatly increased )
private mail -- thanks!)
Changes are:
* Fixed stream4 offset initialization
* Double Open of snort log file
* Lots of new rules
* Fatal error on problems other than -> and <>
* Fixed stream4 several low memory conditions
* Error checking in stream4/frag2 argument parsing
* snortdb schema updates to 1.05
* --with-pcap-includes should now look at specified pcap
* packet statistics now should be more accurate with regards to
lost packets werwerwerwerwer
* double PID file write
* S4 alignment problems on Sparc fixed
* new snmptrap code
* documentation updates
* Stability fixes in frag2
Major repairs include a fix to frag2 on Linux platforms, the icmp
decoder and printout routines were updated to match the data
structures that I implemented in 1.8.1 and the flexresp code was
repaired and should now be faster, plus the usual rule updates. I
also added a new "-B" command line switch to convert IP addresses
in a pcap file to a new specified IP subnet addresses.
* fixed UTC timestamps
* fixed SIGUSR1 handling, should reset properly now after getting
a signal
* fixed PID path generation code, PID files go in the right place
now
* fixed stability problems in stream4
* fixed stability problems in frag2
* tweaks to spo_unified for better integration with barnyard
* added -f switch to turn off fflush() calls in binary logging mode
* added new config keyword to stream4, "log_flushed_streams", which
causes all buffered packets in the stream reassembler for that
session to be logged in the event of an event on that stream
(must be used in conjunction with spo_log_tcpdump)
* added packet precacheing for flexresp TCP packets, responses
should be generated more quickly
* fixed rules parser code for various failure modes
* several new rules files and a new classification system
* SNMP alerts
* IDMEF XML output (the Silicon Defense plugin is integrated into
the main codebase now)
* Limited regex support in the rules language
* New packet counters for stream4 and frag2
* New normalization mode for http_decode
