Information disclosure in Squid Cache Manager

1) Improper access control

EUVDB-ID: #VU67604

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41317

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to inconsistent handling of internal URIs. A remote authenticated proxy user can bypass the manager ACL protection and access cache manager information, which includes records of internal network structure, client credentials, client identity and client traffic behavior.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Squid: 4.9 - 5.6

External links

http://github.com/squid-cache/squid/security/advisories/GHSA-rcg9-7fqm-83mq/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.