CVE-2006-6931

Severity

50%

Complexity

99%

Confidentiality

48%

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."

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."

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 18 years ago

2007-01-16 23:28:00

Last updated 7 years ago

2017-07-29 01:29:00

Affected Software

Snort Snort

References

[dailydave] 20070110 Algorithmic Bugs

23716

24164

24338

GLSA-200702-03

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

Vendor Advisory

http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf

Vendor Advisory

http://www.cs.wisc.edu/~smithr/pubs/randy_smith_acsac2006.zip

MDKSA-2007:051

32096

21991

http://www.snort.org/pub-bin/snortnews.cgi

snort-rule-matching-dos(31430)

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