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CVE-2023-43787

Published: 3 October 2023

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

Notes

AuthorNote
mdeslaur
issue is in libx11, but libxpm was also fixed to avoid passing
invalid data

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
libx11
Launchpad, Ubuntu, Debian
upstream
Released (1.8.7)
focal
Released (2:1.6.9-2ubuntu1.6)
jammy
Released (2:1.7.5-1ubuntu0.3)
lunar
Released (2:1.8.4-2ubuntu0.3)
bionic
Released (2:1.6.4-3ubuntu0.4+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
trusty
Released (2:1.6.2-1ubuntu2.1+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2:1.6.3-1ubuntu2.2+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
mantic
Released (2:1.8.6-1ubuntu1)
libxpm
Launchpad, Ubuntu, Debian
upstream
Released (3.5.17)
focal
Released (1:3.5.12-1ubuntu0.20.04.2)
jammy
Released (1:3.5.12-1ubuntu0.22.04.2)
lunar
Released (1:3.5.12-1.1ubuntu0.1)
mantic
Released (1:3.5.12-1.1ubuntu1)
bionic
Released (1:3.5.12-1ubuntu0.18.04.2+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
trusty
Released (1:3.5.10-1ubuntu0.1+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (1:3.5.11-1ubuntu0.16.04.1+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
motif
Launchpad, Ubuntu, Debian
trusty Needs triage

xenial Needs triage

bionic Needs triage

focal Needs triage

jammy Needs triage

lunar Needs triage

upstream Needs triage

mantic Needs triage

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H