CVE-2023-29499 | Gvariant offset table entry size is not checked in is_normal()

A flaw was found in GLib. GVariant deserialization fails to validate that the input conforms to the expected format, 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-2023-29499 is rated Low Risk (33/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.12%). 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-2023-29499

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 2025-11-21 0.20% 0.12% -0.08%
2 2025-11-18 0.12% 0.20% +0.07%
3 2025-04-15 — 0.12% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-29499

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]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
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.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2023-29499

OS Trackers for CVE-2023-29499

vendor priority summary link
alpine high CVE-2023-29499: 1 source package rows (glib); 15 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 15. https://security.alpinelinux.org/vuln/CVE-2023-29499
debian not yet assigned CVE-2023-29499 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-2023-29499
gentoo high CVE-2023-29499: 1 GLSA(s) (202311-18), 1 atom(s) (dev-libs/glib); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-29499
redhat low — https://access.redhat.com/security/cve/CVE-2023-29499
suse medium CVE-2023-29499 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-2023-29499/
ubuntu medium CVE-2023-29499 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-2023-29499

Affected software / configurations for CVE-2023-29499

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

References for CVE-2023-29499

cvelogic Threat Intelligence