CVE-2023-32636

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-09-14 · updated 2026-10-15
Weakness: CWE-400

Description

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.

Affected products

GNOME GLib: before 2.74.4 — fixed in 2.74.4

How to fix

Upgrade to a fixed version: GNOME GLib 2.74.4. Check the vendor advisory for mitigations.

References

https://gitlab.gnome.org/GNOME/glib/-/issues/2841
https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
https://security.netapp.com/advisory/ntap-20231110-0002/
https://gitlab.gnome.org/GNOME/glib/-/issues/2841
https://https://discourse.gnome.org/t/multiple-fixes-for-gvariant-normalisation-issues-in-glib/12835
https://security.netapp.com/advisory/ntap-20231110-0002/
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

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