Vulnerability identifier: #VU74196

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28486

CWE-ID: CWE-78

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Sudo
Client/Desktop applications / Software for system administration

Vendor: Sudo

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation when processing control characters in the log messages. A local user can inject specially crafted characters to the log messages and execute arbtirary OS commands on the system when the command is executed from the log (e.g. via the "sudoreplay -l").

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Sudo: 1.9.0 - 1.9.12p2

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External links
http://github.com/sudo-project/sudo/commit/334daf92b31b79ce68ed75e2ee14fca265f029ca
http://github.com/sudo-project/sudo/releases/tag/SUDO_1_9_13

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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