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CVE-2023-32636

Published: 7 June 2023

A flaw was found in glib, where the gvariant deserialization code is vulnerable to a denial of service introduced by additional input validation added to resolve CVE-2023-29499. The offset table validation may be very slow. This bug does not affect any released version of glib but does affect glib distributors who followed the guidance of glib developers to backport the initial fix for CVE-2023-29499.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
glib2.0
Launchpad, Ubuntu, Debian
bionic
Released (2.56.4-0ubuntu0.18.04.9+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
trusty
Released (2.40.2-0ubuntu1.1+esm6)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2.48.2-0ubuntu4.8+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
focal
Released (2.64.6-1~ubuntu20.04.6)
jammy
Released (2.72.4-0ubuntu2.2)
kinetic
Released (2.74.3-0ubuntu1.2)
lunar Not vulnerable
(2.76.1-1)
upstream
Released (2.75.1,2.74.4)
mantic Not vulnerable
(2.76.1-1)
Patches:
upstream: https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3163
upstream: https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3164 (2.74)

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