Insecure digital certificates In gnutls28
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.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Component | Affected version | Patched versions |
|---|---|---|---|
 debian 11 | 3.7.1-5+deb11u10 | ||
debian 12 | 3.7.9-2+deb12u7 | ||
debian 14 | 3.8.13-1 | ||
 rpm rhel10 | 0:3.8.10-4.el10_2 | ||
rpm rhel6 | - | - | |
rpm rhel7 | - | - | |
rpm rhel8 | 0:3.6.16-8.el8_10.6 | ||
rpm rhel9 | 0:3.8.10-4.el9_8 | ||
 alpine v3.22 | 3.8.13-r0 | ||
alpine v3.23 | 3.8.13-r0 |
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Aliases