Vulnerability Details CVE-2021-29443
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.012
EPSS Ranking 63.4%
CVSS Severity
CVSS v3 Score 5.9
CVSS v2 Score 4.3
References
Products affected by CVE-2021-29443
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cpe:2.3:a:panva:jose:1.0.0
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cpe:2.3:a:panva:jose:1.0.1
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cpe:2.3:a:panva:jose:1.0.2
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cpe:2.3:a:panva:jose:1.10.0
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cpe:2.3:a:panva:jose:1.10.1
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cpe:2.3:a:panva:jose:1.10.2
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cpe:2.3:a:panva:jose:1.11.0
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cpe:2.3:a:panva:jose:1.12.0
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cpe:2.3:a:panva:jose:1.12.1
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cpe:2.3:a:panva:jose:1.13.0
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cpe:2.3:a:panva:jose:1.14.0
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cpe:2.3:a:panva:jose:1.15.0
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cpe:2.3:a:panva:jose:1.15.1
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cpe:2.3:a:panva:jose:1.16.0
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cpe:2.3:a:panva:jose:1.16.1
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cpe:2.3:a:panva:jose:1.16.2
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cpe:2.3:a:panva:jose:1.17.0
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cpe:2.3:a:panva:jose:1.17.1
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cpe:2.3:a:panva:jose:1.17.2
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cpe:2.3:a:panva:jose:1.18.0
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cpe:2.3:a:panva:jose:1.18.1
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cpe:2.3:a:panva:jose:1.18.2
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cpe:2.3:a:panva:jose:1.19.0
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cpe:2.3:a:panva:jose:1.20.0
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cpe:2.3:a:panva:jose:1.21.0
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cpe:2.3:a:panva:jose:1.21.1
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cpe:2.3:a:panva:jose:1.22.0
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cpe:2.3:a:panva:jose:1.22.1
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cpe:2.3:a:panva:jose:1.22.2
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cpe:2.3:a:panva:jose:1.23.0
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cpe:2.3:a:panva:jose:1.24.0
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cpe:2.3:a:panva:jose:1.24.1
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cpe:2.3:a:panva:jose:1.25.0
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cpe:2.3:a:panva:jose:1.25.1
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cpe:2.3:a:panva:jose:1.25.2
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cpe:2.3:a:panva:jose:1.26.0
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cpe:2.3:a:panva:jose:1.26.1
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cpe:2.3:a:panva:jose:1.27.0
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cpe:2.3:a:panva:jose:1.27.1
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cpe:2.3:a:panva:jose:1.27.2
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cpe:2.3:a:panva:jose:1.27.3
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cpe:2.3:a:panva:jose:1.28.0
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cpe:2.3:a:panva:jose:1.3.0
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cpe:2.3:a:panva:jose:1.4.0
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cpe:2.3:a:panva:jose:1.4.1
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cpe:2.3:a:panva:jose:1.5.0
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cpe:2.3:a:panva:jose:1.5.1
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cpe:2.3:a:panva:jose:1.5.2
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cpe:2.3:a:panva:jose:1.6.0
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cpe:2.3:a:panva:jose:1.6.1
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cpe:2.3:a:panva:jose:1.7.0
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cpe:2.3:a:panva:jose:1.8.0
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cpe:2.3:a:panva:jose:1.9.0
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cpe:2.3:a:panva:jose:1.9.1
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cpe:2.3:a:panva:jose:1.9.2
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cpe:2.3:a:panva:jose:2.0.0
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cpe:2.3:a:panva:jose:2.0.1
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cpe:2.3:a:panva:jose:2.0.2
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cpe:2.3:a:panva:jose:2.0.3
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cpe:2.3:a:panva:jose:2.0.4
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cpe:2.3:a:panva:jose:3.0.0
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cpe:2.3:a:panva:jose:3.0.1
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cpe:2.3:a:panva:jose:3.0.2
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cpe:2.3:a:panva:jose:3.1.0
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cpe:2.3:a:panva:jose:3.1.1
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cpe:2.3:a:panva:jose:3.1.2
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cpe:2.3:a:panva:jose:3.1.3
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cpe:2.3:a:panva:jose:3.10.0
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cpe:2.3:a:panva:jose:3.11.0
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cpe:2.3:a:panva:jose:3.11.1
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cpe:2.3:a:panva:jose:3.11.2
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cpe:2.3:a:panva:jose:3.11.3
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cpe:2.3:a:panva:jose:3.2.0
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cpe:2.3:a:panva:jose:3.3.0
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cpe:2.3:a:panva:jose:3.3.1
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cpe:2.3:a:panva:jose:3.3.2
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cpe:2.3:a:panva:jose:3.4.0
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cpe:2.3:a:panva:jose:3.5.0
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cpe:2.3:a:panva:jose:3.5.1
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cpe:2.3:a:panva:jose:3.5.2
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cpe:2.3:a:panva:jose:3.5.3
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cpe:2.3:a:panva:jose:3.5.4
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cpe:2.3:a:panva:jose:3.6.0
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cpe:2.3:a:panva:jose:3.6.1
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cpe:2.3:a:panva:jose:3.6.2
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cpe:2.3:a:panva:jose:3.7.0
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cpe:2.3:a:panva:jose:3.7.1
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cpe:2.3:a:panva:jose:3.8.0
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cpe:2.3:a:panva:jose:3.9.0