Improper Certificate Validation Affecting gnutls-dane package, versions <0:3.3.29-9.0.3.el7_9


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-ORACLE7-GNUTLSDANE-18741055
  • published12 Aug 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-42012  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Oracle:7 gnutls-dane to version 0:3.3.29-9.0.3.el7_9 or higher.
This issue was patched in ELSA-2026-43575.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-dane package and not the gnutls-dane package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.

References

CVSS Base Scores

version 3.1