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Fencer Vulns
medium 5.0

CVE-2024-28835 json

Gnutls: potential crash during chain building/verification

published 2024-03-21 2 y ago modified 2026-11-08 29 h ago also EUVD-2024-25921

cvss
5.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

A flaw has been discovered in GnuTLS where an application crash can be induced when attempting to verify a specially crafted .pem bundle using the "certtool --verify-chain" command.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 0:3.7.6-23.el9_3.4, 0:3.8.3-4.el9_4
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:3.7.6-21.el9_2.3
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • gnutls28 Debian 12 3.7.9-2+deb12u3
  • gnutls28 Debian 14, Debian 13 3.8.4-2

debian advisories DEBIAN-CVE-2024-28835

  • gnutls28 Ubuntu 22.04 LTS 3.7.3-4ubuntu1.5
  • gnutls28 Ubuntu 24.04 LTS 3.8.3-1.1ubuntu3.1

ubuntu advisories UBUNTU-CVE-2024-28835

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnutls RHEL 9 3.8.3-4.el9_4
  • gnutls-c++ RHEL 9 3.8.3-4.el9_4
  • gnutls-dane RHEL 9 3.8.3-4.el9_4
  • gnutls-utils RHEL 9 3.8.3-4.el9_4
  • gnutls RHEL 9 3.7.6-23.el9_3.4
  • gnutls-c++ RHEL 9 3.7.6-23.el9_3.4
  • gnutls-dane RHEL 9 3.7.6-23.el9_3.4
  • gnutls-utils RHEL 9 3.7.6-23.el9_3.4

red hat advisories RHSA-2024:2889RHSA-2024:2570RHSA-2024:1879

  • gnutls Linux Micro 6.0 3.8.3-2.1
  • gnutls SLE Micro 5.3 3.7.3-150400.8.1
  • gnutls SLE Module for Basesystem 15 SP5, SLE Micro 5.5, SLE Micro 5.4 +8 more 3.7.3-150400.4.44.1

suse advisories SUSE-SU-2025:20017-1SUSE-SU-2024:2546-1SUSE-SU-2024:1271-2SUSE-SU-2024:1271-3SUSE-SU-2024:1271-1

  • gnutls openSUSE Tumbleweed 3.8.4-1.1

opensuse advisories openSUSE-SU-2024:13806-1

  • gnutls AlmaLinux 9 3.8.3-4.el9_4
  • gnutls-c++ AlmaLinux 9 3.8.3-4.el9_4
  • gnutls-dane AlmaLinux 9 3.8.3-4.el9_4
  • gnutls-utils AlmaLinux 9 3.8.3-4.el9_4
  • gnutls AlmaLinux 9 3.7.6-23.el9_3.4
  • gnutls-c++ AlmaLinux 9 3.7.6-23.el9_3.4
  • gnutls-dane AlmaLinux 9 3.7.6-23.el9_3.4
  • gnutls-utils AlmaLinux 9 3.7.6-23.el9_3.4

almalinux advisories ALSA-2024:2570ALSA-2024:1879

  • gnutls Rocky Linux 9 3.8.3-4.el9_4

rocky linux advisories RLSA-2024:2570

  • gnutls Alpine 3.19, Alpine 3.18 3.8.4-r0
  • gnutls Alpine 3.24, Alpine 3.23, Alpine 3.22 +2 more 3.8.5-r0

alpine advisories ALPINE-CVE-2024-28835

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnutls CBL-Mariner 2.0 3.7.11-1
  • gnutls Azure Linux 3.0 3.8.3-2

azure linux advisories AZL-37085AZL-37108

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-28835 updated cvss 5.0

gnutls: potential crash during chain building/verification

  • Red Hat Enterprise Linux 6 gnutls, gnutls-guile, gnutls-utils Red Hat Enterprise Linux 7 gnutls, gnutls-c++, gnutls-dane, gnutls-utils
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 9) gnutls-c++ 3.8.3-4.el9_4, gnutls-dane 3.8.3-4.el9_4, gnutls-utils 3.8.3-4.el9_4, gnutls-c++ 3.7.6-23.el9_3.4, gnutls-dane 3.7.6-23.el9_3.4, gnutls-utils 3.7.6-23.el9_3.4
    fixed: vendor fix RHSA-2024:1879
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) gnutls-c++ 3.7.6-21.el9_2.3, gnutls-dane 3.7.6-21.el9_2.3, gnutls-utils 3.7.6-21.el9_2.3
    fixed: vendor fix RHSA-2024:2889
  • Red Hat Enterprise Linux BaseOS (v. 9) gnutls 3.8.3-4.el9_4, gnutls 3.7.6-23.el9_3.4
    fixed: vendor fix RHSA-2024:1879
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) gnutls 3.7.6-21.el9_2.3
    fixed: vendor fix RHSA-2024:2889
  • Red Hat Enterprise Linux 8 gnutls, gnutls-c++, gnutls-dane, gnutls-utils Red Hat Enterprise Linux 10 gnutls
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 5.0

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.0 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.