Ubuntu update for ghostscript

1) OS Command Injection

EUVDB-ID: #VU77939

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-36664

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation for pipe devices (with the %pipe% prefix or the | pipe character prefix). A remote attacker can trick the victim to open a specially crafted PDF file and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package ghostscript to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.04

ghostscript (Ubuntu package): before 10.0.0~dfsg1-0ubuntu1.2

External links

http://ubuntu.com/security/notices/USN-6213-1

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. However, proof of concept for this vulnerability is available.