GHSA-58f5-hfqc-jgch

Suggest an improvement
Source
https://github.com/advisories/GHSA-58f5-hfqc-jgch
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-58f5-hfqc-jgch/GHSA-58f5-hfqc-jgch.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-58f5-hfqc-jgch
Aliases
Related
Published
2021-04-19T14:57:22Z
Modified
2023-11-08T04:05:34.200327Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Padding Oracle Attack due to Observable Timing Discrepancy in jose
Details

jose is an npm library providing a number of cryptographic operations.

Impact

AESCBCHMAC_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).

Patches

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

Credits

Thanks to Morgan Brown of Microsoft for bringing this up and Eva Sarafianou (@esarafianou) for helping to score this advisory.

Database specific 
{
    "nvd_published_at": "2021-04-16T18:15:00Z",
    "github_reviewed_at": "2021-04-16T23:01:38Z",
    "severity": "MODERATE",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-203",
        "CWE-696"
    ]
}
References

Affected packages

npm / jose

Package

Name
jose
View open source insights on deps.dev
Purl
pkg:npm/jose

Affected ranges

Type
SEMVER
Events
Introduced
1.0.0
Fixed
1.28.1

npm / jose

Package

Name
jose
View open source insights on deps.dev
Purl
pkg:npm/jose

Affected ranges

Type
SEMVER
Events
Introduced
2.0.0
Fixed
2.0.5

npm / jose

Package

Name
jose
View open source insights on deps.dev
Purl
pkg:npm/jose

Affected ranges

Type
SEMVER
Events
Introduced
3.0.0
Fixed
3.11.4