National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-12524 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 9.8 CRITICAL
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12524.txt Third Party Advisory
https://www.debian.org/security/2020/dsa-4682

Weakness Enumeration

CWE-ID CWE Name Source
CWE-306 Missing Authentication for Critical Function NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
3.0
Up to (including)
3.5.28
 cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
4.0
Up to (including)
4.7
 cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
5.0
Up to (including)
5.0.1


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-12524
NVD Published Date:
04/15/2020
NVD Last Modified:
05/09/2020