Use-after-free in X.org Server - CVE-2022-46343
Published: December 20, 2022 / Updated: January 2, 2023
Vulnerability identifier: #VU70436
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-46343
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: X.org
Affected software:
X.org Server
X.org Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The
vulnerability exists due to a use-after-free error when handling
ScreenSaverSetAttributes requests. A local user can trigger a
use-after-free error and execute arbitrary code with elevated
privileges.
How to mitigate CVE-2022-46343
Install updates from vendor's website.
Sources
- https://bugzilla.redhat.com/show_bug.cgi?id=2151758
- https://access.redhat.com/security/cve/CVE-2022-46343
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DXDF2O5PPLE3SVAJJYUOSAD5QZ4TWQ2G/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5NELB7YDWRABYYBG4UPTHRBDTKJRV5M2/
- https://www.zerodayinitiative.com/advisories/ZDI-22-1698/