Improper Validation of Specified Quantity in Input Affecting gnutls-utils package, versions <0:3.3.29-9.0.3.el7_9


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.56% (45th percentile)

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  • Snyk IDSNYK-ORACLE7-GNUTLSUTILS-18741029
  • published12 Aug 2026
  • disclosed26 May 2026

Introduced: 26 May 2026

CVE-2026-42013  (opens in a new tab)
CWE-1284  (opens in a new tab)

How to fix?

Upgrade Oracle:7 gnutls-utils 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-utils package and not the gnutls-utils package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.

References

CVSS Base Scores

version 3.1