jose is an npm library providing a number of cryptographic operations.
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).
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 Morgan Brown of Microsoft for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.
| Score | Percentile |
|---|---|
| 0.32% | 54.54% |
| Base score | Version | Severity | Vector |
|---|---|---|---|
| 5.9 | 3.1 | — |
|
| Type | Value |
|---|---|
| GHSA | GHSA-58f5-hfqc-jgch ↗ |
| CVE | CVE-2021-29443 ↗ |
Vulnerable version ranges and first patched releases as published by GitHub.
| Ecosystem | Package | Vulnerable range | First patched | Vulnerable functions |
|---|---|---|---|---|
| npm | jose | >= 1.0.0, < 1.28.1 | 1.28.1 | — |
| npm | jose | >= 2.0.0, < 2.0.5 | 2.0.5 | — |
| npm | jose | >= 3.0.0, < 3.11.4 | 3.11.4 | — |