Use After Free in X.org X Server
CVE-2022-46343
A vulnerability was found in X.Org. This security flaw occurs because the handler for the ScreenSaverSetAttributes request may write to memory after it has been freed. This issue can lead to local privileges elevation on systems where the X server is running privileged and remote code execution for ssh X forwarding sessions.
Vulnerability class: Use-After-Free
EPSS: 0.024 (82.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- X.org X_server — versions 1.20.4
- Debian Debian_linux — versions 11.0
- Fedoraproject Fedora — versions 36, 37
- Redhat Enterprise_linux — versions 6.0, 7.0, 8.0
- N/a Xorg-x11-server — versions xorg-x11-server-1.20.4
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory)
- secalert@redhat.com (Third Party Advisory, Issue Tracking)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Mailing List, Third Party Advisory)
- secalert@redhat.com
Frequently asked questions
- What is CVE-2022-46343?
- CVE-2022-46343 is a high-severity vulnerability in X.org X Server, classified under Use After Free. CVSS score: 8.8/10. Published 2022-12-14.
- How severe is CVE-2022-46343?
- High severity. CVSS v3 base score is 8.8 out of 10.