G_variant_byteswap() can take a long time with some non-normal inputs

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Summary

CVECVE-2023-32611
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-14 20:15:09 UTC
Updated2026-06-23 18:17:32 UTC
DescriptionA flaw was found in GLib. GVariant deserialization is vulnerable to a slowdown issue where a crafted GVariant can cause excessive processing, leading to denial of service.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.003760000 probability, percentile 0.292530000 (date 2026-06-23)

Problem Types: CWE-400 | CWE-400 Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNACVSS5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Gnome Glib All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Glib2 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 8 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 9 Not specified Not specified
CNA Fedora Extra Packages For Enterprise Linux Not specified Not specified
CNA Fedora Fedora 38 Not specified Not specified
CNA Fedora Fedora 37 Not specified Not specified
CNA Fedora Fedora 37 Not specified Not specified
CNA Fedora Fedora 38 Not specified Not specified

References

ReferenceSourceLinkTags
2211829 – (CVE-2023-32611) CVE-2023-32611 glib: g_variant_byteswap() can take a long time with some non-normal inputs af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
[SECURITY] [DLA 3583-1] glib2.0 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
CVE-2023-32611 Gnome Glib Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
(CVE-2023-32611) g_variant_byteswap() can take a long time with some non-normal inputs (#2797) · Issues · GNOME / GLib · GitLab af854a3a-2127-422b-91ae-364da2661108 gitlab.gnome.org Vendor Advisory
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
security.gentoo.org/glsa/202311-18 af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Upstream acknowledges William Manley as the original reporter. (en)

Additional Advisory Data

SourceTimeEvent
CNA2023-05-24T00:00:00.000ZReported to Red Hat.
CNA2022-12-14T00:00:00.000ZMade public.

Legacy QID Mappings

  • 161110 Oracle Enterprise Linux Security Update for glib2 (ELSA-2023-6631)
  • 182342 Debian Security Update for glib2.0 (CVE-2023-32611)
  • 199417 Ubuntu Security Notification for GLib Vulnerabilities (USN-6165-1)
  • 199839 Ubuntu Security Notification for GLib Vulnerabilities (USN-6165-2)
  • 242293 Red Hat Update for glib2 (RHSA-2023:6631)
  • 284032 Fedora Security Update for mingw (FEDORA-2023-1a7e2b3dda)
  • 284071 Fedora Security Update for mingw (FEDORA-2023-9e5a29a25d)
  • 355458 Amazon Linux Security Advisory for glib2 : ALAS2023-2023-225
  • 6000090 Debian Security Update for glib2.0 (DLA 3583-1)
  • 673279 EulerOS Security Update for glib2 (EulerOS-SA-2023-2612)
  • 673293 EulerOS Security Update for glib2 (EulerOS-SA-2023-2582)
  • 710801 Gentoo Linux GLib Multiple Vulnerabilities (GLSA 202311-18)
  • 941370 AlmaLinux Security Update for glib2 (ALSA-2023:6631)
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