Vulnerability identifier: #VU80912

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-29444

CWE-ID: CWE-203

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
jose
Web applications / JS libraries

Vendor:

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to AES_CBC_HMAC_SHA2 Algorithm (A128CBC-HS256, A192CBC-HS384, A256CBC-HS512) decryption always execute both HMAC tag verification and CBC decryption, if either failed `JWEDecryptionFailed` would be thrown. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://github.com/panva/jose/security/advisories/GHSA-94hh-pjjg-rwmr
http://www.npmjs.com/package/jose-browser-runtime

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.