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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.026 (84.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.026 · change: +0.002
Affected products
- X.org X Server — versions 1.20.4
- Debian Linux — versions 11.0
- Fedoraproject Fedora — versions 36, 37
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Xorg-X11-Server — versions xorg-x11-server-1.20.4
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2022-46343 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2022/dsa-5304 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202305-30
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.