DEBIAN-CVE-2023-3255

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2023-3255
Published: 13 Sept 2023, 17:15
Last modified:28 Apr 2026, 20:26

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Sept 2023, 17:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:26
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•qemu

    < 1:7.2+dfsg-7+deb12u2 | < 1:8.0.4+dfsg-1 | < 1:8.0.4+dfsg-1

References (1)