CVE-2006-6931

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."

5.0

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 3.51% Top 15%

Vendor Advisory gentoo.org Vendor Advisory mandriva.com Vendor Advisory acsac.org Vendor Advisory wisc.edu

Affected: n/a n/a

References

Link	Tags
http://www.securityfocus.com/bid/21991	vdb entry
http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip
http://lists.immunitysec.com/pipermail/dailydave/2007-January/003954.html	mailing list
http://secunia.com/advisories/24164	third party advisory
http://secunia.com/advisories/24338	third party advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/31430	vdb entry
http://www.osvdb.org/32096	vdb entry
http://secunia.com/advisories/23716	third party advisory
http://securitytracker.com/id?1017508	vdb entry
http://security.gentoo.org/glsa/glsa-200702-03.xml	vendor advisory
http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf	vendor advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2007:051	vendor advisory
http://www.acsac.org/2006/advance_program.html
http://www.acsac.org/2006/papers/54.pdf	vendor advisory
http://www.acsac.org/2006/abstracts/54.html
http://www.snort.org/pub-bin/snortnews.cgi

Frequently Asked Questions

What is the severity of CVE-2006-6931?: CVE-2006-6931 has been scored as a medium severity vulnerability.
How to fix CVE-2006-6931?: To fix CVE-2006-6931, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2006-6931 being actively exploited in the wild?: It is possible that CVE-2006-6931 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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