CVE-2019-12525 - CVE House
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Status published Critical CVE-2019-12525

An issue was discovered in Squid 3.3.9 through 3.5.28 and...

Vulnerability Description

An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.

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.

References

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Affected Vendor

squid-cache

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Affected Software

squid, debian linux, leap, fedora, ubuntu linux
Vulnerable Versions:
3.3.9, 4.0, 8.0, 9.0, 10.0, 15.0, 15.1, 29, 12.04, 16.04, 18.04, 19.04

Timeline

Official Publish: July 11th, 2019
Last Modified: August 4th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.