CVE-2009-2855 — Improper Input Validation in Squid

CWE-20 — Improper Input Validation9 documents8 sources
Severity
5.0MEDIUMNVD
EPSS
60.7%
top 1.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
SquidSquid-cache Squid
Timeline
PublishedAug 18
Latest updateMay 2

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.

CVSS vector

AV:N/AC:L/C:N/I:N/A:PExploitability: 10.0 | Impact: 2.9

Affected Packages2 packages

▶Debiansquid/squid< 2.7.STABLE7-1+3

🔴Vulnerability Details

3
GHSA
GHSA-7hrp-6jq3-pm4q: The strListGetItem function in src/HttpHeaderTools↗2022-05-02
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CVEList
CVE-2009-2855: The strListGetItem function in src/HttpHeaderTools↗2009-08-18
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OSV
CVE-2009-2855: The strListGetItem function in src/HttpHeaderTools↗2009-08-18
▶

📋Vendor Advisories

3
Ubuntu
Squid vulnerabilities↗2010-02-16
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Red Hat
squid: DoS (100% CPU use) while processing certain external ACL helper HTTP headers↗2009-06-28
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Debian
CVE-2009-2855: squid - The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote ...↗2009
▶

💬Community

2
Bugzilla
CVE-2009-2855 squid: DoS (100% CPU use) while processing certain external ACL helper HTTP headers↗2009-08-19
▶
Bugzilla
squid DoS in external auth header parser↗2009-07-06
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CVE-2009-2855 — Improper Input Validation in Squid | cvebase