Ubuntu update for squid3

Published: 2023-12-11

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-46728 CVE-2023-46847
CWE-ID	CWE-476 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system squid3 (Ubuntu package) Operating systems & Components / Operating system package or component squid (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU83379

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-46728

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in Gopher gateway. A remote attacker can pass specially crafted data to the server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6500-2

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU82313