CVE Database›CVE-2020-11945

CVE-2020-11945

squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution

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Severity

Important

Red Hat Product Security

8.1

CVSS 3.1

Review impact separately from score.

Published · April 24, 2020

Updated · November 22, 2025

Description

A flaw was found in Squid, where a remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This issue occurs because the attacker can overflow the nonce reference counter, which results in remote code execution if the pooled token credentials are freed.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-284 · Improper Access Control