What’s Vulnerable › Vulnerabilities

CVE-2024-28835: Gnutls: potential crash during chain building/verification

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-21 · updated 2026-10-22
• Weakness: CWE-248

Description

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.

Affected products

• Red Hat Enterprise Linux 9: all versions — fixed in 0:3.7.6-23.el9_3.4, 0:3.8.3-4.el9_4
• Red Hat Enterprise Linux 9.2 Extended Update Support: all versions — fixed in 0:3.7.6-21.el9_2.3

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 9 0:3.7.6-23.el9_3.4, 0:3.8.3-4.el9_4; Red Hat Enterprise Linux 9.2 Extended Update Support 0:3.7.6-21.el9_2.3. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHSA-2024:1879
• https://access.redhat.com/errata/RHSA-2024:2570
• https://access.redhat.com/errata/RHSA-2024:2889
• https://access.redhat.com/security/cve/CVE-2024-28835
• https://bugzilla.redhat.com/show_bug.cgi?id=2269084
• https://lists.gnupg.org/pipermail/gnutls-help/2024-March/004845.html
• http://www.openwall.com/lists/oss-security/2024/03/22/1
• http://www.openwall.com/lists/oss-security/2024/03/22/2
• https://access.redhat.com/errata/RHSA-2024:1879
• https://access.redhat.com/errata/RHSA-2024:2570
• https://access.redhat.com/errata/RHSA-2024:2889
• https://access.redhat.com/security/cve/CVE-2024-28835

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