CVE-2019-19520
xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2019-19520- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.6 Medium
AV:L/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2019-19520- Updated
- 2026-11-02
EUVDEUVD-2019-9138 No score
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.
- Record
EUVD-2019-9138- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jhm5-r427-j4rc No score
xlock in OpenBSD 6.6 allows local users to gain the privileges of the auth group by providing a...
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.
- Record
GHSA-jhm5-r427-j4rc- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | retrymp3/Openbsd-Privilege-Escalation | 2020-11-21 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-19520 is a high vulnerability (CVSS 7.8) in Openbsd, published December 4, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.35%, the 71st percentile. No source names a fixed version.
References
openwall.com/lists/oss-security/2019/12/04/5
openbsd.org/errata66.html
seclists.org/bugtraq/2019/Dec/8
packetstormsecurity.com/files/155572/Qualys-Security-Advisory-OpenBSD-Authentication-Bypass-Privilege-Escalation.html
nvd.nist.gov/vuln/detail/CVE-2019-19520
github.com/advisories/GHSA-jhm5-r427-j4rc