CVE-2019-19520: 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…

High severity · published Dec 5, 2019

CVE-2019-19520

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…

7.8

CVSS

1.3%

EPSS

On KEV

Description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.3% · higher than 71% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Openbsd · Openbsd

6.6 · source: NVD

Affected product

Openbsd

All Openbsd CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2019-19520

CVE.org

https://www.cve.org/CVERecord?id=CVE-2019-19520

Third Party Advisory

http://packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html

Third Party Advisory

http://seclists.org/fulldisclosure/2019/Dec/14

Exploit

http://www.openwall.com/lists/oss-security/2019/12/04/5

Mailing List

http://www.openwall.com/lists/oss-security/2019/12/04/6

Exploit

https://seclists.org/bugtraq/2019/Dec/8

Vendor Advisory

https://www.openbsd.org/errata66.html