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>> Snort SACK TCP Option Handling Remote Denial of Service Issue
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Title : Snort SACK TCP Option Handling Remote Denial of Service Issue
VUPEN ID : VUPEN/ADV-2005-1721
CVE ID : GENERIC-MAP-NOMATCH
CWE ID : CWE-
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2005-09-12
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A vulnerability has been identified in Snort, which could be exploited by remote attackers to cause a denial of service. This flaw is due to an error in the "PrintTcpOptions()" function [log.c] that does not properly handle specially crafted TCP packets containing malformed SACK options, which could be exploited by remote attackers to crash a vulnerable application. Note : This vulnerability exists only when snort is run in verbose mode.
Affected Products
Snort version 2.4.0 and prior
Solution
A fix is available via CVS :
http://www.snort.org/pub-bin/snapshots.cgi
References
http://www.vupen.com/english/advisories/2005/1721
http://www.vulnfact.com/advisories/snort_adv.html
Credits
Vulnerability reported by Alejandro Hernández Hernández
ChangeLog
2005-09-12 : Initial release
Vulnerability Management
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