Vulnerability Report

CVE-2006-6931

Title: Snort Denial of Service (DoS)

Denial of Service (DoS)

Proof Of Concept

No public PoC currently indexed for CVE-2006-6931.

CWE Category NVD-CWE-noinfo

Published Date Jan 16, 2007

Modified Date Apr 09, 2025

Exploit Status Not Found

Score 5.0 CVSS v2.0

Exploit Probability (EPSS)

2.31%

Vulnerability Summary

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."

Impacted Vendors

snort 1

martin_roesch 1

cisco 1

Reference Links

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2006-6931 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

January 16, 2007 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.