PT-2021-18221 · Unknown · Jose-Node-Cjs-Runtime

Morgan Brown · Published 2021-04-16 · Updated 2023-03-21 · CVE-2021-29446

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: jose-node-cjs-runtime versions prior to 3.11.4

Description: The AES CBC HMAC SHA2 Algorithm decryption in the jose-node-cjs-runtime package has a timing difference when a padding error occurs, creating a padding oracle. This allows an adversary to potentially decrypt data without knowing the decryption key by making on average 128*b calls to the padding oracle, where b is the number of bytes in the ciphertext block.

Recommendations: For versions prior to 3.11.4, upgrade to version 3.11.4 or later to ensure the HMAC tag is verified before performing CBC decryption.

Fix

Side Channel Attack

Weakness Enumeration

CWE-208

CWE-696

CWE-203

Related Identifiers

CVE-2021-29446

GHSA-RVCW-F68W-8H8H

Affected Products

Jose-Node-Cjs-Runtime

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-29446 · Security Note
• https://osv.dev/vulnerability/CVE-2021-29446 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-rvcw-f68w-8h8h · Vendor Advisory
• https://github.com/panva/jose · Note
• https://github.com/panva/jose/security/advisories/GHSA-rvcw-f68w-8h8h · Note
• https://npmjs.com/package/jose-node-cjs-runtime · Note