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CVE-2026-42012

Опубликовано: 26 мая 2026
Источник: debian

Описание

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.

Пакеты

ПакетСтатусВерсия исправленияРелизТип
gnutls28fixed3.8.13-1package

Примечания

  • https://www.gnutls.org/security-new.html#GNUTLS-SA-2026-04-29-7

  • https://gitlab.com/gnutls/gnutls/-/issues/1802

  • Fixed by: https://gitlab.com/gnutls/gnutls/-/commit/8dcc6a1f48945997666ac9f10896819edd01a03b (3.8.13)

Связанные уязвимости

CVSS3: 7.1
ubuntu
2 месяца назад

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.

CVSS3: 7.1
redhat
3 месяца назад

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.

CVSS3: 7.1
nvd
2 месяца назад

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.

CVSS3: 7.1
msrc
около 2 месяцев назад

Gnutls: gnutls: certificate validation bypass due to improper handling of uri and srv sans

CVSS3: 7.1
redos
около 1 месяца назад

Уязвимость gnutls