Denial of service in Squid

Published: 2024-06-25 | Updated: 2024-10-28

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-37894 CVE-2024-45802
CWE-ID	CWE-787 CWE-399
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Squid Server applications / IDS/IPS systems, Firewalls and proxy servers
Vendor	Squid-cache.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU93235

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-37894

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing ESI response content. A remote attacker can trick the victim to visit a specially crafted website, trigger an out-of-bounds write and crash the proxy server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Squid: 3.0.stable1 - 6.9

CPE2.3

External links

https://github.com/squid-cache/squid/security/advisories/GHSA-wgvf-q977-9xjg

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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.

2) Resource management error

EUVDB-ID: #VU99355