#VU97578 Security features bypass in json-jwt - CVE-2023-51774

Vulnerability identifier: #VU97578

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-51774

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
json-jwt
Other software / Other software solutions

Vendor: Nov Matake (nov)

Description

The vulnerability allows a remote attacker to bypass identity checks via a sign/encryption confusion attack.

The vulnerability exists due to sign/encryption confusion. A remote attacker can bypass identity checks via a sign/encryption confusion attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

json-jwt: 1.16.3

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External links
https://github.com/P3ngu1nW/CVE_Request/blob/main/novjson-jwt.md

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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.