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!!
