jose-node-cjs-runtime up to 3.11.3 on npm information exposure

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CVSS Meta Temp Score
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3.6$0-$5k0.00

A vulnerability was found in jose-node-cjs-runtime up to 3.11.3 on npm (NPM Package) and classified as problematic. This issue affects some unknown processing. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-203. Impacted is confidentiality. The summary by CVE is:

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`.

The weakness was published 04/17/2021. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-29446 since 03/30/2021. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 3.11.4 eliminates this vulnerability.

Productinfoedit

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Name

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Information disclosure
CWE: CWE-203
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: jose-node-cjs-runtime 3.11.4

Timelineinfoedit

03/30/2021 CVE assigned
04/17/2021 +18 days Advisory disclosed
04/17/2021 +0 days VulDB entry created
04/21/2021 +4 days VulDB last update

Sourcesinfoedit

Advisory: github.com
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2021-29446 (🔒)

Entryinfoedit

Created: 04/17/2021 09:15 AM
Updated: 04/21/2021 08:18 PM
Changes: (1) source_cve_cna
Complete: 🔍

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