Vulnerability identifier: #VU81434

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-2023-43787

CWE-ID: CWE-190

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libx11
Other software / Other software solutions

Vendor: xorg.freedesktop.org

Description

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

The vulnerability exists due to integer overflow within the XCreateImage() function. A local user can trigger integer overflow and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libx11: 1.0.99.1 - 1.8.6

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External links
http://seclists.org/oss-sec/2023/q4/17
http://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/7916869d16bdd115ac5be30a67c3749907aea6a0

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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.