CVE-2022-4283
xorg-server - security update
7.8
HIGH
CVSS 3.1
EPSS 0.20%
Description
A vulnerability was found in X.Org. This security flaw occurs because the XkbCopyNames function left a dangling pointer to freed memory, resulting in out-of-bounds memory access on subsequent XkbGetKbdByName requests.. 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.
How to fix CVE-2022-4283
To remediate CVE-2022-4283, upgrade the affected package to a fixed version below.
- —upgrade to 2:1.20.11-1+deb11u4 or later
- —upgrade to 2:1.20.4-1+deb10u7 or later
- —upgrade to 2:1.20.11-1+deb11u4 or later
- —upgrade to 2:22.1.6-1 or later
Is CVE-2022-4283 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 2:1.20.11-1+deb11u4
- from 0, < 2:1.20.4-1+deb10u7
- from 0, < 2:1.20.11-1+deb11u4
- from 0, < 2:22.1.6-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |