CVE-2023-1393
xorg-server - security update
7.8
HIGH
CVSS 3.1
EPSS 0.09%
Description
A flaw was found in X.Org Server Overlay Window. A Use-After-Free may lead to local privilege escalation. If a client explicitly destroys the compositor overlay window (aka COW), the Xserver would leave a dangling pointer to that window in the CompScreen structure, which will trigger a use-after-free later.
How to fix CVE-2023-1393
To remediate CVE-2023-1393, upgrade the affected package to a fixed version below.
- —upgrade to 2:1.20.11-1+deb11u6 or later
- —upgrade to 2:1.20.4-1+deb10u9 or later
- —upgrade to 2:1.20.11-1+deb11u6 or later
- —upgrade to 2:22.1.9-1 or later
Is CVE-2023-1393 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 2:1.20.11-1+deb11u6
- from 0, < 2:1.20.4-1+deb10u9
- from 0, < 2:1.20.11-1+deb11u6
- from 0, < 2:22.1.9-1
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 |