Vulnerability identifier: #VU81432

Vulnerability risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-43785

CWE-ID: CWE-125

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the _XkbReadKeySyms() function. A local user can trigger an out-of-bounds read error and read contents of memory on the system.

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/6858d468d9ca55fb4c5fd70b223dbc78a3358a7f

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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.