| ID |
CVE-2021-29446
|
| Summary |
jose-node-cjs-runtime is an npm package which provides a number of cryptographic functions. In versions prior to 3.11.4 the 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. But 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). A patch was released which ensures the HMAC tag is verified before performing CBC decryption. The fixed versions are `>=3.11.4`. Users should upgrade to `^3.11.4`. |
| References |
|
| Vulnerable Configurations |
|
| CVSS |
| Base: | 4.3 (as of 21-03-2023 - 13:19) |
| Impact: | |
| Exploitability: | |
|
| CWE |
CWE-203 |
| CAPEC |
|
| Access |
| Vector | Complexity | Authentication |
| NETWORK |
MEDIUM |
NONE |
|
| Impact |
| Confidentiality | Integrity | Availability |
| PARTIAL |
NONE |
NONE |
|
| cvss-vector
via4
|
AV:N/AC:M/Au:N/C:P/I:N/A:N
|
| Last major update |
21-03-2023 - 13:19 |
| Published |
16-04-2021 - 22:15 |
| Last modified |
21-03-2023 - 13:19 |
