CVE-2019-12523 Affecting squid package, versions <4.9-1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.93% (84th percentile)

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  • Snyk IDSNYK-DEBIAN13-SQUID-5696266
  • published10 Nov 2019
  • disclosed26 Nov 2019

Introduced: 10 Nov 2019

CVE-2019-12523  (opens in a new tab)

How to fix?

Upgrade Debian:13 squid to version 4.9-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.

CVSS Scores

version 3.1