CVE-2020-13645

In GNOME glib-networking through 2.64.2, the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. This is in contrast to its intended documented behavior, to fail the certificate verification. Applications that fail to provide the server identity, including Balsa before 2.5.11 and 2.6.x before 2.6.1, accept a TLS certificate if the certificate is valid for any host.

In GNOME glib-networking through 2.64.2, the implementation of GTlsClientConnection skips hostname verification of the server's TLS certificate if the application fails to specify the expected server identity. This is in contrast to its intended documented behavior, to fail the certificate verification. Applications that fail to provide the server identity, including Balsa before 2.5.11 and 2.6.x before 2.6.1, accept a TLS certificate if the certificate is valid for any host.

En GNOME glib-networking versiones hasta 2.64.2, la implementación de GTlsClientConnection omite la verificación del nombre de host del certificado TLS del servidor si la aplicación presenta un fallo al especificar la identidad esperada del servidor. Esto está en contraste con su comportamiento documentado previsto, en el fallo de la verificación del certificado. Las aplicaciones que fallaron al proporcionar la identidad del servidor, incluidas Balsa versiones anteriores a 2.5.11 y versiones 2.6.x anteriores a 2.6.1, aceptan un certificado TLS si el certificado es válido para cualquier host.