CVE-2023-32665 | Gvariant deserialisation does not match spec for non-normal data

A flaw was found in GLib. GVariant deserialization is vulnerable to an exponential blowup issue where a crafted GVariant can cause excessive processing, leading to denial of service.

Published: 2023-09-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-32665 is rated Low Risk (31.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.06%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-32665

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2024-12-19 0.05% 0.06% +0.01%
2 2023-09-15 — 0.05% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-32665

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2023-32665

OS Trackers for CVE-2023-32665

vendor priority summary link
debian not yet assigned CVE-2023-32665 not yet assigned priority: Debian including 1 source packages (glib2.0), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-32665
gentoo high CVE-2023-32665: 1 GLSA(s) (202311-18), 1 atom(s) (dev-libs/glib); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-32665
redhat low — https://access.redhat.com/security/cve/CVE-2023-32665
suse medium CVE-2023-32665 severity moderate: SUSE including 39 source package names (1.6.6:libglib-2_0-0-2.54.3-150000.4.29.1, 15.1.6.2.814:libglib-2_0-0-2.54.3-150000.4.29.1, …), 434 product×package rows across 47 product lines (Container caasp/v4/cilium, Container caasp/v4/cilium-operator, … (47 product lines)): Known Not Affected 362, Fixed 72. https://www.suse.com/security/cve/CVE-2023-32665/
ubuntu medium CVE-2023-32665 medium priority: Ubuntu including 1 source packages (glib2.0), 9 status rows across 9 suites (bionic, focal, jammy, kinetic, lunar, mantic, trusty, upstream, xenial): released 7, not-affected 2. https://ubuntu.com/security/CVE-2023-32665

Affected software / configurations for CVE-2023-32665

Vendor Product Version Raw CPE
gnome glib < 2.74.4 cpe:2.3:a:gnome:glib:*:*:*:*:*:*:*:*

References for CVE-2023-32665

cvelogic Threat Intelligence