#VU67754 Input validation error in Zutty - CVE-2022-41138

Vulnerability identifier: #VU67754

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-41138

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Zutty

Vendor: tomszilagyi

Description

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

The vulnerability exists due to insufficient validation of user-supplied input passed as request selection or setting (DECRQSS) sequence. A local user can pass specially crafted input to the terminal window and execute arbitrary OS commands.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zutty: 0.1 - 0.12

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External links
https://bugs.gentoo.org/868495
https://github.com/tomszilagyi/zutty/commit/bde7458c60a7bafe08bbeaafbf861eb865edfa38
https://github.com/tomszilagyi/zutty/compare/0.12...0.13

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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.