Vulnerability Monitor

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CVE-2006-6931

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."

Published

2007-01-16T23:28:00.000

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
NVD-CWE-Other

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	snort	snort	≤ 2.6.2	Yes

References

http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html ([email protected])
http://secunia.com/advisories/23716 ([email protected])
http://secunia.com/advisories/24164 ([email protected])
http://secunia.com/advisories/24338 ([email protected])
http://security.gentoo.org/glsa/glsa-200702-03.xml ([email protected])
http://securitytracker.com/id?1017508 ([email protected])
http://www.acsac.org/2006/abstracts/54.html ([email protected])
http://www.acsac.org/2006/advance_program.html ([email protected])
http://www.acsac.org/2006/papers/54.pdf Vendor Advisory ([email protected])
http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf Vendor Advisory ([email protected])
http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip ([email protected])
http://www.mandriva.com/security/advisories?name=MDKSA-2007:051 ([email protected])
http://www.osvdb.org/32096 ([email protected])
http://www.securityfocus.com/bid/21991 ([email protected])
http://www.snort.org/pub-bin/snortnews.cgi ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/31430 ([email protected])
http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/23716 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/24164 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/24338 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-200702-03.xml (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1017508 (af854a3a-2127-422b-91ae-364da2661108)
http://www.acsac.org/2006/abstracts/54.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.acsac.org/2006/advance_program.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.acsac.org/2006/papers/54.pdf Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip (af854a3a-2127-422b-91ae-364da2661108)
http://www.mandriva.com/security/advisories?name=MDKSA-2007:051 (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/32096 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/21991 (af854a3a-2127-422b-91ae-364da2661108)
http://www.snort.org/pub-bin/snortnews.cgi (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/31430 (af854a3a-2127-422b-91ae-364da2661108)