Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| devel | not-affected | 3.8.12-2ubuntu1.1 |
| esm-infra-legacy/xenial | released | 3.4.10-4ubuntu1.9+esm3 |
| esm-infra/bionic | released | 3.5.18-1ubuntu1.6+esm3 |
| esm-infra/focal | released | 3.6.13-2ubuntu1.12+esm2 |
| esm-infra/xenial | ignored | end of ESM support, was needs-triage |
| fips-preview/jammy | needed | |
| fips-updates/jammy | released | 3.7.3-4ubuntu1.9+Fips1 |
| fips-updates/noble | released | 3.8.3-1.1ubuntu3.6+Fips1.2 |
| jammy | released | 3.7.3-4ubuntu1.9 |
| noble | released | 3.8.3-1.1ubuntu3.6 |
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EPSS
6.5 Medium
CVSS3
Связанные уязвимости
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.
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.
Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison
A flaw was found in gnutls. This vulnerability occurs because gnutls p ...
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.
EPSS
6.5 Medium
CVSS3