Algorithmic complexity vulnerability in Snort before 2.6.1, during predicate evaluation in rule matching for certain rules, allows remote attackers to cause a denial of service (CPU consumption and detection outage) via crafted network traffic, aka a backtracking attack.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Snort | Snort | * | 2.6.2 (including) |
| Snort | Ubuntu | dapper | * |
| Snort | Ubuntu | devel | * |
| Snort | Ubuntu | edgy | * |
| Snort | Ubuntu | feisty | * |
| Snort | Ubuntu | gutsy | * |
| Snort | Ubuntu | hardy | * |
| Snort | Ubuntu | intrepid | * |
| Snort | Ubuntu | jaunty | * |
| Snort | Ubuntu | karmic | * |
References
- http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html
- http://secunia.com/advisories/23716
- http://secunia.com/advisories/24164
- http://secunia.com/advisories/24338
- http://security.gentoo.org/glsa/glsa-200702-03.xml
- http://securitytracker.com/id?1017508
- http://www.acsac.org/2006/abstracts/54.html
- http://www.acsac.org/2006/advance_program.html
- http://www.acsac.org/2006/papers/54.pdf
- http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf
- http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:051
- http://www.osvdb.org/32096
- http://www.securityfocus.com/bid/21991
- http://www.snort.org/pub-bin/snortnews.cgi
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31430
- http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html
- http://secunia.com/advisories/23716
- http://secunia.com/advisories/24164
- http://secunia.com/advisories/24338
- http://security.gentoo.org/glsa/glsa-200702-03.xml
- http://securitytracker.com/id?1017508
- http://www.acsac.org/2006/abstracts/54.html
- http://www.acsac.org/2006/advance_program.html
- http://www.acsac.org/2006/papers/54.pdf
- http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf
- http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:051
- http://www.osvdb.org/32096
- http://www.securityfocus.com/bid/21991
- http://www.snort.org/pub-bin/snortnews.cgi
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31430