Description
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.
CVSS 6.5EPSS 0.565%Risque 0.68
Voir la source- Publication
- 2026-04-30 18:16:30
- Versions concernées
- unknown
- Type
- Package
- Dernière modification
- 2026-07-22 16:17:18
- Vecteur
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Systèmes d’exploitation
- Linux