An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).
Advisories
Source ID Title
Debian DLA Debian DLA DLA-2278-1 squid3 security update
Debian DSA Debian DSA DSA-4682-1 squid security update
Ubuntu USN Ubuntu USN USN-4356-1 Squid vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.34294}

epss

{'score': 0.32932}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T11:42:00.741Z

Reserved: 2020-04-20T00:00:00

Link: CVE-2020-11945

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-04-23T15:15:14.233

Modified: 2024-11-21T04:58:57.450

Link: CVE-2020-11945

cve-icon Redhat

Severity : Important

Publid Date: 2020-04-24T00:00:00Z

Links: CVE-2020-11945 - Bugzilla

cve-icon OpenCVE Enrichment

No data.