Buffer overflow in X.org X Server
CVE-2022-2320
A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. This flaw allows an attacker to escalate privileges and execute arbitrary code in the context of root.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- X.org X Server — versions 21.1.0
- Xorg-X11-Server — versions xorg-x11-server 21.1
Weakness classification (CWE)
References
- gitlab.freedesktop.org/xorg/xserver/-/merge_requests/938 (Patch, Third Party Advisory)
- gitlab.freedesktop.org/xorg/xserver/-/merge_requests/939 (Patch, Third Party Advisory)
- github.com/freedesktop/xorg-xserver/commit/dd8caf39e9e15d8f302e54045dd08d8ebf10… (Patch, Third Party Advisory)
- www.zerodayinitiative.com/advisories/ZDI-22-963/ (VDB Entry, Third Party Advisory)
- lists.freedesktop.org/archives/xorg-announce/2022-July/003192.html (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202210-30 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20221104-0003/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2022-2320?
- CVE-2022-2320 is a high-severity vulnerability in X.org X Server, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-09-01.
- How severe is CVE-2022-2320?
- High severity. CVSS v3 base score is 7.8 out of 10.