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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-04-15T18:35:11

Updated: 2024-08-04T23:24:38.617Z

Reserved: 2019-06-02T00:00:00

Link: CVE-2019-12524

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-04-15T19:15:12.533

Modified: 2021-02-09T16:55:39.497

Link: CVE-2019-12524

cve-icon Redhat

Severity : Moderate

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

Links: CVE-2019-12524 - Bugzilla