CVE-2021-29443
CVE-2021-29443 · Padding Oracle Attack due to Observable Timing Discrepancy in jose
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
jose is an npm library providing a number of cryptographic operations. In vulnerable versions AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption would always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. A possibly observable difference in timing when padding error would occur while decrypting the ciphertext makes a padding oracle and an adversary might be able to make use of that oracle to decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). All major release versions have had a patch released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `^1.28.1 || ^2.0.5 || >=3.11.4`. Users should upgrade their v1.x dependency to ^1.28.1, their v2.x dependency to ^2.0.5, and their v3.x dependency to ^3.11.4. Thanks to Jason from Microsoft Vulnerability Research (MSVR) for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.
CVSS 5.9 · Media · EPSS 1,2% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: node
Productos y versiones afectados
jose
- Versiones
- < 1.28.1: Afectada
- >= 2.0.0, < 2.0.5: Afectada
- >= 3.0.0, < 3.11.4: Afectada
Sin corrección publicada
jose npm
- Intervalos de versiones afectados
- SEMVER: ≥ 1.0.0, < 1.28.1
Actualiza a 1.28.1
jose npm
- Intervalos de versiones afectados
- SEMVER: ≥ 2.0.0, < 2.0.5
Actualiza a 2.0.5
jose npm
- Intervalos de versiones afectados
- SEMVER: ≥ 3.0.0, < 3.11.4
Actualiza a 3.11.4