National Vulnerability Database (NVD) National Vulnerability Database (CVE-2009-2855)

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NVD is the U.S. government repository of standards based vulnerability management data. This data enables automation of vulnerability management, security measurement, and compliance (e.g. FISMA).

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NVD contains:

CVE Vulnerabilities: 39671
Checklists: 129
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OVAL Queries: 2517
CPE Names: 17905

Last updated: Mon Nov 23 10:16:20 EST 2009

CVE Publication rate: 9.67

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Vulnerability Summary for CVE-2009-2855

Original release date:08/18/2009

Last revised:09/02/2009

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)

Impact Subscore: 2.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/11/2009)

Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-2855 This issue did not affect the versions of the Squid packages, as shipped with Red Hat Enterprise Linux 3 and 4. The Red Hat Security Response Team has rated this issue as having low security impact, a future Squid package update may address this flaw in Red Hat Enterprise Linux 5. More information regarding issue severity can be found here: http://www.redhat.com/security/updates/classification/

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=518182

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=518182

External Source: XF

Name: squid-strlistgetitem-dos(52610)

Hyperlink:http://xforce.iss.net/xforce/xfdb/52610

External Source: MISC

Name: http://www.squid-cache.org/bugs/show_bug.cgi?id=2704

Type: Advisory

Hyperlink:http://www.squid-cache.org/bugs/show_bug.cgi?id=2704

External Source: CONFIRM

Name: http://www.squid-cache.org/bugs/show_bug.cgi?id=2541