CVE-2023-3255
6.5
MEDIUM
CVSS 3.1
EPSS 0.12%
Description
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service.
How to fix CVE-2023-3255
To remediate CVE-2023-3255, upgrade the affected package to a fixed version below.
- —upgrade to 1:7.2+dfsg-7+deb12u2 or later
Is CVE-2023-3255 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:7.2+dfsg-7+deb12u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |