CVE-2016-9603
qemu-kvm - security update
9.9
CRITICAL
CVSS 3.1
EPSS 0.63%
Description
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.
How to fix CVE-2016-9603
To remediate CVE-2016-9603, upgrade the affected package to a fixed version below.
- —upgrade to 4.7.2-r0 or later
- —upgrade to 1:2.8+dfsg-4 or later
- —upgrade to 1.1.2+dfsg-6+deb7u21 or later
- —upgrade to 4.4.0-1 or later
- —upgrade to 4.1.6.lts1-12 or later
Is CVE-2016-9603 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0, < 4.7.2-r0
- from 0, < 1:2.8+dfsg-4
- from 0, < 1.1.2+dfsg-6+deb7u21
- from 0, < 4.4.0-1
- from 0, < 4.1.6.lts1-12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.9 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |