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6.5Mittel

CVE-2026-3833Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison

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 7 Extended Lifecyc… Veröffentlicht: (vor 6 Monaten)

Beschreibung

A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.

Schwachstellentyp (CWE): CWE-178

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
cert manager 1.17 —
cert manager 1.18 —
cert manager 1.20 —
discovery 2 —
enterprise linux 8 —
enterprise linux 9 —
gnu gnutls —
openshift 4.12 —
openshift 4.13 —
openshift 4.14 —
openshift 4.15 —
openshift 4.16 —
openshift 4.17 —
openshift 4.18 —
openshift 4.19 —
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
redhat enterprise linux 6.0
redhat hardened images —
redhat openshift container platform 4.0
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 —
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 —
Red Hat Red Hat OpenShift Container Platform 4.12 all versions
Red Hat Red Hat OpenShift Container Platform 4.13 all versions
Red Hat Red Hat OpenShift Container Platform 4.14 all versions
Red Hat Red Hat OpenShift Container Platform 4.15 all versions
Red Hat Red Hat OpenShift Container Platform 4.16 all versions
Red Hat Red Hat OpenShift Container Platform 4.17 all versions
Red Hat Red Hat OpenShift Container Platform 4.18 all versions
Red Hat Red Hat OpenShift Container Platform 4.19 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 < 3.8.13

Referenzen und Patches

CPE-Treffer (NVD) (8)
  • cpe:2.3:a:gnu:gnutls:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

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