A vulnerability classified as critical has been found in OpenBSD 6.6 (Operating System). Affected is an unknown code in the library xenocara/lib/mesa/src/loader/loader.c of the component xlock. The manipulation of the argument LIBGL_DRIVERS_PATH as part of a Environment Variable leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a LIBGL_DRIVERS_PATH environment variable, because xenocara/lib/mesa/src/loader/loader.c mishandles dlopen.

The weakness was disclosed 12/05/2019 (oss-sec). The advisory is available at openwall.com. This vulnerability is traded as CVE-2019-19520 since 12/03/2019. Local access is required to approach this attack. A authentication is needed for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/07/2024). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries 146681 and 146683 are pretty similar.

Productinfo

Type

• Operating System

Name

• OpenBSD

Version

• 6.6

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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