Описание
The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh, and ecdsa_fixed_ecdh values for ClientCertificateType but does not directly document the ability to compute the master secret in certain situations with a client secret key and server public key but not a server secret key, which makes it easier for man-in-the-middle attackers to spoof TLS servers by leveraging knowledge of the secret key for an arbitrary installed client X.509 certificate, aka the "Key Compromise Impersonation (KCI)" issue.
Ссылки
- Press/Media CoverageTechnical DescriptionThird Party Advisory
- Mailing ListTechnical DescriptionThird Party Advisory
- Broken LinkThird Party AdvisoryVDB Entry
- ExploitTechnical Description
- Third Party Advisory
- ExploitMitigationTechnical Description
- Press/Media CoverageTechnical DescriptionThird Party Advisory
- Mailing ListTechnical DescriptionThird Party Advisory
- Broken LinkThird Party AdvisoryVDB Entry
- ExploitTechnical Description
- Third Party Advisory
- ExploitMitigationTechnical Description
Уязвимые конфигурации
Одновременно
Одно из
Одно из
EPSS
8.1 High
CVSS3
6.8 Medium
CVSS2
Дефекты
Связанные уязвимости
The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_ ...
The TLS protocol 1.2 and earlier supports the rsa_fixed_dh, dss_fixed_dh, rsa_fixed_ecdh, and ecdsa_fixed_ecdh values for ClientCertificateType but does not directly document the ability to compute the master secret in certain situations with a client secret key and server public key but not a server secret key, which makes it easier for man-in-the-middle attackers to spoof TLS servers by leveraging knowledge of the secret key for an arbitrary installed client X.509 certificate, aka the "Key Compromise Impersonation (KCI)" issue.
EPSS
8.1 High
CVSS3
6.8 Medium
CVSS2