Missing Authentication for Critical Function Affecting squid:4/libecap package, versions <0:1.0.1-2.module_el8.6.0+2741+01592ae8
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Test your applications- Snyk ID SNYK-ALMALINUX8-SQUID-5617038
- published 28 May 2023
- disclosed 3 Nov 2020
Introduced: 3 Nov 2020
CVE-2019-12524 Open this link in a new tabHow to fix?
Upgrade AlmaLinux:8 squid:4/libecap to version 0:1.0.1-2.module_el8.6.0+2741+01592ae8 or higher.
This issue was patched in ALSA-2020:4743.
NVD Description
Note: Versions mentioned in the description apply only to the upstream squid:4/libecap package and not the squid:4/libecap package as distributed by AlmaLinux.
See How to fix? for AlmaLinux: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.
References
- https://errata.almalinux.org/8/ALSA-2020-4743.html
- https://vulners.com/cve/CVE-2019-12524
- https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12524.txt
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
- https://security.netapp.com/advisory/ntap-20210205-0006/
- https://usn.ubuntu.com/4446-1/
- https://www.debian.org/security/2020/dsa-4682