Remote code execution in OpenPrinting cupsd

1) Heap-based buffer overflow

EUVDB-ID: #VU76761

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-32324

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the format_log_line() function cups/string.c when the "loglevel" is set to "DEBUG". A remote attacker can pass specially crafted data to the daemon, 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

cups: 2.4.2

CPE2.3

• cpe:2.3:a:OpenPrinting:cups:2.4.2:*:*:*:*:*:*:*

External links

https://seclists.org/oss-sec/2023/q2/206
https://github.com/OpenPrinting/cups/commit/fd8bc2d32589d1fd91fe1c0521be2a7c0462109e
https://github.com/OpenPrinting/cups/releases/tag/v2.4.3

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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