CVE-2023-43786

MEDIUM

libX11 - DoS

Title source: llm
STIX 2.1

Description

A vulnerability was found in libX11 due to an infinite loop within the PutSubImage() function. This flaw allows a local user to consume all available system resources and cause a denial of service condition.

Exploits (1)

nomisec WORKING POC
by jfrog · poc
https://github.com/jfrog/jfrog-CVE-2023-43786-libX11_DoS

Scores

CVSS v3 5.5
EPSS 0.0008
EPSS Percentile 24.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-400 CWE-835
Status published
Products (4)
fedoraproject/fedora 38
redhat/enterprise_linux 8.0
redhat/enterprise_linux 9.0
x.org/libx11 < 1.8.7
Published Oct 10, 2023
Tracked Since Feb 18, 2026