CVE-2004-0189 - CVE House
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Status published High CVE-2004-0189

The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier...

Vulnerability Description

The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") character, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

Affected Vendor

Affected Software

squid
Vulnerable Versions:
2.0_patch2, 2.1_patch2, 2.3_stable5, 2.4, 2.4_stable7, 2.5_stable3, 2.5_stable4

Timeline

Official Publish: September 1st, 2004
Last Modified: August 8th, 2024
Added to House: July 18th, 2026

CVSS Vectors

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.