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|CTI Interest Score|
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A vulnerability has been found in jose-node-esm-runtime up to 3.11.3 on npm (NPM Package) and classified as problematic. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-203. As an impact it is known to affect confidentiality. CVE summarizes:
jose-node-esm-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 shared 04/17/2021. The advisory is shared for download at github.com. This vulnerability was named CVE-2021-29445 since 03/30/2021. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.
Upgrading to version 3.11.4 eliminates this vulnerability.
CVSSv3VulDB 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: 🔍
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
ExploitingClass: Information disclosure
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceThreat: 🔍
0-Day Time: 🔒
Upgrade: jose-node-esm-runtime 3.11.4
Timeline03/30/2021 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
CVE: CVE-2021-29445 (🔒)
EntryCreated: 04/17/2021 09:14 AM
Updated: 04/21/2021 08:08 PM
Changes: (1) source_cve_cna
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