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CVE-2022-40303

Published: 23 November 2022

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
libxml2
Launchpad, Ubuntu, Debian
bionic
Released (2.9.4+dfsg1-6.1ubuntu1.8)
focal
Released (2.9.10+dfsg-5ubuntu0.20.04.5)
jammy
Released (2.9.13+dfsg-1ubuntu0.2)
kinetic
Released (2.9.14+dfsg-1ubuntu0.1)
lunar Not vulnerable
(2.9.14+dfsg-1.1)
trusty
Released (2.9.1+dfsg1-3ubuntu4.13+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (2.10.3)
xenial
Released (2.9.3+dfsg1-1ubuntu0.7+esm4)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
Patches:
upstream: https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H