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CVE-2020-28042

Description

ServiceStack before 5.9.2 mishandles JWT signature verification unless an application has a custom ValidateToken function that establishes a valid minimum length for a signature.

POC

Reference

- https://www.shielder.it/advisories/servicestack-jwt-signature-verification-bypass/

Github

- https://github.com/ARPSyndicate/cve-scores

- https://github.com/ARPSyndicate/cvemon

- https://github.com/The-Cracker-Technology/jwt_tool

- https://github.com/achmadismail173/jwt_exploit

- https://github.com/crpytoscooby/resourses_web

- https://github.com/fatihtuzunn/api-pentesting-tool

- https://github.com/google/pseudo-identity-provider

- https://github.com/guchangan1/All-Defense-Tool

- https://github.com/mishmashclone/ticarpi-jwt_tool

- https://github.com/phramz/tc2022-jwt101

- https://github.com/puckiestyle/jwt_tool

- https://github.com/snakesec/jwt_tool

- https://github.com/suddenabnormalsecrets/pseudo-identity-provider

- https://github.com/techleadevelopers/Security-Stuffers-Lab

- https://github.com/techleadevelopers/red-team-ops

- https://github.com/ticarpi/jwt_tool

- https://github.com/whoami13apt/tool-

- https://github.com/z-bool/Venom-JWT

- https://github.com/zhangziyang301/jwt_tool