CVE-2023-3255 — Infinite Loop in Qemu

CWE-835 — Infinite Loop10 documents8 sources
Severity
6.5MEDIUMNVD
OSV3.2
EPSS
0.1%
top 69.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
QemuFedoraproject FedoraRedhat Enterprise Linux
Timeline
PublishedSep 13
Latest updateJun 6

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 vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages3 packages

▶Debianqemu/qemu< 1:7.2+dfsg-7+deb12u2+2
▶Ubuntuqemu/qemu< 1:4.2-3ubuntu6.28+3
▶NVDqemu/qemu8.0.3

Also affects: Fedora 38, Enterprise Linux 8.0, 9.0

Patches

Patch: bugzilla.redhat.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

5
OSV
qemu regression↗2024-06-06
▶
OSV
qemu vulnerabilities↗2024-01-08
▶
GHSA
GHSA-p5xv-5g6h-qw33: A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages↗2023-09-13
▶
CVEList
Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service↗2023-09-13
▶
OSV
CVE-2023-3255: A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages↗2023-09-13
▶

📋Vendor Advisories

4
Ubuntu
QEMU vulnerabilities↗2024-01-08
▶
Microsoft
Qemu: vnc: infinite loop in inflate_buffer() leads to denial of service↗2023-09-12
▶
Red Hat
QEMU: VNC: infinite loop in inflate_buffer() leads to denial of service↗2023-07-04
▶
Debian
CVE-2023-3255: qemu - A flaw was found in the QEMU built-in VNC server while processing ClientCutText ...↗2023
▶
CVE-2023-3255 — Infinite Loop in Qemu | cvebase