#VU71180 Use of a broken or risky cryptographic algorithm in node-jsonwebtoken - CVE-2022-23539

Vulnerability identifier: #VU71180

Vulnerability risk: Medium

CVSSv4.0: 6.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-23539

CWE-ID: CWE-327

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
node-jsonwebtoken
Web applications / JS libraries

Vendor: auth0 on WordPress

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insecure key types are used for signature verification. A remote user can enable legacy keys usage.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

node-jsonwebtoken: 8.0.0 - 8.5.1

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External links
https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-8cf7-32gw-wr33
https://github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf7016e3

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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