|Bugzilla:||518182: CVE-2009-2855 squid: DoS (100% CPU use) while processing certain external ACL helper HTTP headers|
The MITRE CVE dictionary describes this issue as:
The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.
This issue did not affect the versions of the squid packages, as shipped with Red Hat Enterprise Linux 3 and 4.
The issue was addressed in the squid packages as shipped with Red Hat Enterprise Linux 5 via:
CVSS v2 metrics
|Access Vector:||Adjacent Network|
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat security errata
|Red Hat Enterprise Linux version 5 (squid)||RHSA-2010:0221||March 29, 2010|
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For clarification or corrections please contact the Red Hat Security Response Team.