#VU87906 Input validation error in Util-linux - CVE-2024-28085

Vulnerability identifier: #VU87906

Vulnerability risk: Low

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

CVE-ID: CVE-2024-28085

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
Util-linux
Universal components / Libraries / Libraries used by multiple products

Vendor: kernel.org

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied arguments along with setgid tty permissions within the wall command. A local user can execute arbitrary commands with escalated privileges on the system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Util-linux: 2.2 - 2.40

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External links
https://people.rit.edu/sjf5462/6831711781/wall_2_27_2024.txt
https://github.com/util-linux/util-linux/security/advisories/GHSA-xv2h-c6ww-mrjq
https://mirrors.edge.kernel.org/pub/linux/utils/util-linux/
https://www.openwall.com/lists/oss-security/2024/03/27/5
https://github.com/skyler-ferrante/CVE-2024-28085

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