Описание
Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.
Ссылки
- ExploitMitigationThird Party Advisory
- Patch
- Issue Tracking
- Third Party Advisory
Уязвимые конфигурации
EPSS
8.7 High
CVSS3
9.1 Critical
CVSS3
Дефекты
Связанные уязвимости
Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.crypto.DSA.signWithMessageHash process in the DSA signing implementation. An attacker can recover the private key by forcing r or s to be zero, so the library emits an invalid signature without retrying, and then solves for x from the resulting signature.
jsrsasign: Missing cryptographic validation during DSA signing enables private key extraction
EPSS
8.7 High
CVSS3
9.1 Critical
CVSS3