CVE-2009-2855

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 60.66% Top 5%
Vendor Advisory squid-cache.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2009/08/03/3 mailing list
http://www.securityfocus.com/bid/36091 vdb entry
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982
http://www.openwall.com/lists/oss-security/2009/08/04/6 mailing list
http://www.squid-cache.org/bugs/show_bug.cgi?id=2704 vendor advisory
http://www.squid-cache.org/bugs/show_bug.cgi?id=2541
http://www.securitytracker.com/id?1022757 vdb entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10592 vdb entry signature
https://bugzilla.redhat.com/show_bug.cgi?id=518182
http://www.openwall.com/lists/oss-security/2009/07/20/10 mailing list
https://exchange.xforce.ibmcloud.com/vulnerabilities/52610 vdb entry
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982

Frequently Asked Questions

What is the severity of CVE-2009-2855?
CVE-2009-2855 has been scored as a medium severity vulnerability.
How to fix CVE-2009-2855?
To fix CVE-2009-2855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-2855 being actively exploited in the wild?
It is possible that CVE-2009-2855 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~61% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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