PT-2009-5213 · Squid+1 · Squid+2

Jan Lieskovsky · Published 2009-08-18 · Updated 2017-09-19 · CVE-2009-2855

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Squid version 2.7

Description The issue is related to the strListGetItem function in src/HttpHeaderTools.c, which allows remote attackers to cause a denial of service. This is achieved through a crafted auth header containing certain comma delimiters, triggering an infinite loop of calls to the strcspn function.

Recommendations For Squid version 2.7, consider applying a patch or fix that addresses the infinite loop issue in the strListGetItem function to prevent denial of service attacks. As a temporary workaround, consider restricting access to auth headers to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2009-2855

DSA-1991-1

RHSA-2010:0221

RHSA-2010_0221

Affected Products

Red Hat

Squid

Squid Cache

References · 20

• http://squid-cache.org/bugs/show_bug.cgi?id=2704 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2009-2855 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2009-2855 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2009-2855 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2009-2855 · Vendor Advisory
• http://openwall.com/lists/oss-security/2009/07/20/10 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=518182 · Note
• https://access.redhat.com/errata/RHSA-2010:0221 · Note
• http://squid-cache.org/bugs/show_bug.cgi?id=2541 · Note
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982 · Note
• https://access.redhat.com/security/cve/CVE-2009-2855 · Note
• http://openwall.com/lists/oss-security/2009/08/04/6 · Note
• http://openwall.com/lists/oss-security/2009/08/03/3 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/52610 · Note
• http://securityfocus.com/bid/36091 · Note