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7.1Alta

CVE-2026-42012Gnutls: gnutls: certificate validation bypass due to improper handling of uri and srv sans

gnutls; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Red Hat Enterprise Linux 6 Extended Lifecyc… Publicada: (hace 5 meses)

Descripción

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.

Debilidad (CWE): CWE-295

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
cert manager 1.17 —
cert manager 1.18 —
cert manager 1.20 —
discovery 2 —
enterprise linux 8 —
enterprise linux 9 —
openshift 4.20 —
openshift 4.21 —
openshift 4.22 —
openshift ai 3.4 —
Red Hat Cert Manager support for Red Hat OpenShift release 1.17 all versions
Red Hat Cert Manager support for Red Hat OpenShift release 1.18 all versions
Red Hat Cert Manager support for Red Hat OpenShift release 1.20 all versions
Red Hat Red Hat Discovery 2 all versions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION all versions
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support all versions
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On all versions
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service all versions
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
Red Hat Red Hat Hardened Images all versions
Red Hat Red Hat OpenShift AI 3.4 all versions
Red Hat Red Hat OpenShift Container Platform 4 all versions
Red Hat Red Hat OpenShift Container Platform 4.20 all versions
Red Hat Red Hat OpenShift Container Platform 4.21 all versions
Red Hat Red Hat OpenShift Container Platform 4.22 all versions
Red Hat Red Hat OpenShift Container Platform 5 all versions
Red Hat Red Hat Update Infrastructure 5 all versions
rhel aus 8.4 —
rhel aus 8.6 —
rhel e4s 8.8 —
rhel e4s 9.2 —
rhel e4s 9.4 —
rhel eus 9.6 —
rhel eus long life 8.4 —
rhel eus long life 8.6 —
rhel tus 8.8 —
rhui 5 —
— gnutls 0

Referencias y parches

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