CVE-2023-3255CWE-835

Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service

Medium · published September 13, 2023

CVSS v3.1
6.5
EPSS
2%
Percentile
79.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01891 · 79.4th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2023-09-13T16:12Z
EPSS history
Timeline
  • 13 SEP 16:12Z
    Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service
    cvelistv5