Multiple vulnerabilities in Squid

Published: 2023-12-03

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-49285 CVE-2023-49286
CWE-ID	CWE-125 CWE-252
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	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 read

EUVDB-ID: #VU83629

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49285

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when handling HTTP messages. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and crash the proxy server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Squid: 2.0 - 12.3

External links

http://github.com/squid-cache/squid/security/advisories/GHSA-8w9r-p88v-mmx9

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) Unchecked Return Value

EUVDB-ID: #VU83628