Resource management error in OpenBSD - CVE-2019-19520
Published: December 5, 2019
Vulnerability identifier: #VU23424
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-19520
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenBSD
Affected software:
OpenBSD
OpenBSD
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists within the xlock in OpenBSD 6.6, due to xenocara/lib/mesa/src/loader/loader.c mishandles dlopen. A local user can provide a specially crafted LIBGL_DRIVERS_PATH environment variable and gain privileges of the auth group.
How to mitigate CVE-2019-19520
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.