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Vulnerability Details : CVE-2009-2855

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.
Publish Date : 2009-08-18 Last Update Date : 2017-09-18
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Vendor Statements

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: https://rhn.redhat.com/errata/RHSA-2010-0221.html
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat low
2.9
AV:A/AC:M/Au:N/C:N/I:N/A:P 2009-08-18 2009-06-28
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2009-2855 oval:org.opensuse.security:def:20092855 unix
DEPRECATED: ELSA-2010-0221 -- squid security and bug fix update (low) oval:org.mitre.oval:def:28087 unix
DSA-1991 squid/squid3 -- denial of service oval:org.mitre.oval:def:7325 unix
DSA-1991-1 squid/squid3 -- denial of service oval:org.mitre.oval:def:13267 unix
ELSA-2010:0221: squid security and bug fix update (Low) oval:org.mitre.oval:def:22519 unix
RHSA-2010:0221: squid security and bug fix update (Low) oval:org.mitre.oval:def:22197 unix
RHSA-2010:0221: squid security and bug fix update (Low) oval:com.redhat.rhsa:def:20100221 unix
The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service v... oval:org.mitre.oval:def:10592 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2009-2855

# Product Type Vendor Product Version Update Edition Language
1 Application Squid-cache Squid 2.7 Stable4 Version Details Vulnerabilities
2 Application Squid-cache Squid 2.7 Version Details Vulnerabilities
3 Application Squid-cache Squid 2.7 Stable3 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Squid-cache Squid 3

- References For CVE-2009-2855

https://exchange.xforce.ibmcloud.com/vulnerabilities/52610
XF squid-strlistgetitem-dos(52610)
https://bugzilla.redhat.com/show_bug.cgi?id=518182 CONFIRM
http://www.squid-cache.org/bugs/show_bug.cgi?id=2704
http://www.securitytracker.com/id?1022757
SECTRACK 1022757
http://www.squid-cache.org/bugs/show_bug.cgi?id=2541 CONFIRM
http://www.securityfocus.com/bid/36091
BID 36091 Squid Web Proxy Cache Authentication Header Parsing Remote Denial of Service Vulnerability Release Date:2010-03-31
http://www.openwall.com/lists/oss-security/2009/07/20/10
MLIST [oss-security] 20090720 squid DoS in external auth header parser
http://www.openwall.com/lists/oss-security/2009/08/04/6
MLIST [oss-security] 20090804 Re: squid DoS in external auth header parser
http://www.openwall.com/lists/oss-security/2009/08/03/3
MLIST [oss-security] 20090803 Re: squid DoS in external auth header parser
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982 CONFIRM
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31;filename=diff;att=1;bug=534982

- Metasploit Modules Related To CVE-2009-2855

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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