CVE-2023-32636: Input Validation
First published: Fri Jun 02 2023(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNOME GLib | <2.74.4 | |
| ubuntu/glib2.0 | <2.56.4-0ubuntu0.18.04.9+ | 2.56.4-0ubuntu0.18.04.9+ |
| ubuntu/glib2.0 | <2.40.2-0ubuntu1.1+ | 2.40.2-0ubuntu1.1+ |
| ubuntu/glib2.0 | <2.48.2-0ubuntu4.8+ | 2.48.2-0ubuntu4.8+ |
| ubuntu/glib2.0 | <2.64.6-1~ubuntu20.04.6 | 2.64.6-1~ubuntu20.04.6 |
| ubuntu/glib2.0 | <2.72.4-0ubuntu2.2 | 2.72.4-0ubuntu2.2 |
| ubuntu/glib2.0 | <2.74.3-0ubuntu1.2 | 2.74.3-0ubuntu1.2 |
| ubuntu/glib2.0 | <2.75.1<2.74.4 | 2.75.1 2.74.4 |
| debian/glib2.0 | 2.58.3-2+deb10u3 2.58.3-2+deb10u5 2.66.8-1+deb11u1 2.74.6-2 2.78.4-1 2.78.4-3 |
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Reference Links
- 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://launchpad.net/bugs/cve/CVE-2023-32636
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32636
- https://access.redhat.com/security/cve/CVE-2023-32636
- https://ubuntu.com/security/notices/USN-6165-1
- https://ubuntu.com/security/notices/USN-6165-2
- https://nvd.nist.gov/vuln/detail/CVE-2023-32636
- https://security-tracker.debian.org/tracker/CVE-2023-32636
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3163
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/3164 (2.74)
- https://ubuntu.com/security/CVE-2023-32636
- https://access.redhat.com/security/cve/CVE-2023-29499
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2212720
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2212721
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2212726
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2212723
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2212728
- https://access.redhat.com/errata/RHSA-2024:2528
- https://bugzilla.redhat.com/show_bug.cgi?id=2211833
Frequently Asked Questions
What is the vulnerability ID for this flaw in glib?
The vulnerability ID for this flaw in glib is CVE-2023-32636.
What is the severity of CVE-2023-32636?
The severity of CVE-2023-32636 is high (7.5).
How does the gvariant deserialization code in glib become vulnerable?
The gvariant deserialization code in glib becomes vulnerable due to a flaw introduced by additional input validation added to resolve CVE-2023-29499.
Which version of glib is affected by this vulnerability?
The vulnerability affects glib versions up to (but not including) 2.74.4.
Is there a fix available for this vulnerability in glib?
Yes, multiple fixes have been released for the gvariant deserialization code in glib to address this vulnerability.
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