QID 150571

Date Published: 2022-10-05

QID 150571: JWT token in Authorization header uses "none" algorithm.

During the WAS scan , it was observed that JWT token is used in Authorization header contains "none" algorithm.

Vulnerability in JWTDecoder.decode can result in an incorrect signature validation of a JWT token. This attack can be exploitable when an attacker crafts a JWT token with a valid header using 'none' as algorithm and a body to requests it be validated.

CVSS V3 rated as High - 7.3 severity.

CVSS V2 rated as High - 7.5 severity.

Solution

Review the JWT token set in Authorization header to use the signing algorithms, such as HMAC SHA256 or RSA.

Vendor References

CVEs related to QID 150571

Software Advisories

Advisory ID	Software	Component	Link

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