Skip to main content
VulnerabilityPublished Updated

CVE-2024-34397: glib · Authentication Bypass by Spoofing

Affects glibSource CVE Database V5

0

Not known to be exploited · CVSS 5.2 Medium : upgrade to 2.80.1 or 2.78.5 when convenient.

Data as of 26 Oct 2026, 11:07 UTC

CVSS 3.1 base score
5.2Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.80.1, 2.78.5
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 May 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade the Debian debian/glib package to 2.80.1 or 2.78.5.

Affected software

ProductAffectedFixed in
Debiandebian/glibpkg:deb/debian/glibOther threatsAffected
  • <2.78.5
  • >=2.79.0 <2.80.1
Fixed in
  • 2.78.5
  • 2.80.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, limit untrusted user access on shared systems where GDBus clients subscribe to trusted system service signals. Monitor vendor channels for official fixes or updates addressing this issue.

Description

An issue was discovered in GNOME GLib before 2.78.5, and 2.79.x and 2.80.x before 2.80.1. When a GDBus-based client subscribes to signals from a trusted system service such as NetworkManager on a shared computer, other users of the same computer can send spoofed D-Bus signals that the GDBus-based client will wrongly interpret as having been sent by the trusted system service. This could lead to the GDBus-based client behaving incorrectly, with an application-dependent impact.

References

Community reviews

Loading reviews…