Missing Authentication for Critical Function Affecting squid package, versions <7:4.11-3.module+el8.3.0+7819+eb7d4ef6


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
1.11% (86th percentile)

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  • Snyk IDSNYK-ORACLE8-SQUID-2574515
  • published10 Apr 2022
  • disclosed15 Apr 2020

Introduced: 15 Apr 2020

CVE-2019-12524  (opens in a new tab)
CWE-306  (opens in a new tab)

How to fix?

Upgrade Oracle:8 squid to version 7:4.11-3.module+el8.3.0+7819+eb7d4ef6 or higher.
This issue was patched in ELSA-2020-4743.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource.

CVSS Scores

version 3.1