Ubuntu update for cups

Published: 2023-09-20
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-4504
Exploitation vector Network
Public exploit N/A
Vulnerable software
Operating systems & Components / Operating system

cups (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Off-by-one

EUVDB-ID: #VU80932

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4504

CWE-ID: CWE-193 - Off-by-one Error

Exploit availability: No


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

The vulnerability exists due to an off-by-one error when parsing Postscript objects within the scan_ps() function in cups/raster-interpret.c. A remote attacker can trigger pass a specially crafted PPD file to the affected application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

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


Update the affected package cups to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 23.04

cups (Ubuntu package): before 2.4.2-3ubuntu2.5

External links


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.