CVE-2006-6931

N/A Unknown
Published: January 16, 2007 Modified: April 23, 2026
View on NVD

Description

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."

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References to Advisories, Solutions, and Tools

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

32 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
4.7%
89th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

snort