LibJWT is a C JSON Web Token Library. Starting in version 3.0.0 and prior to version 3.3.0, the JWK parsing for RSA-PSS did not protect against a NULL value when expecting to parse JSON string values. A specially crafted JWK file could exploit this behavior by using integers in places where the code expected a string. This was fixed in v3.3.0. A workaround is available. Users importing keys through a JWK file should not do so from untrusted sources. Use the jwk2key tool to check for validity of a JWK file. Likewise, if possible, do not use JWK files with RSA-PSS keys.
1.8.0+dfsg-11.8.0+dfsg-21.9.0-11.9.0-1build11.10.2-11.10.2-11.10.2-1build11.10.2-1build11.17.0-21.17.0-2build11.17.0-2build21.17.2-1Exploitability
AV:AAC:HAT:PPR:NUI:AVulnerable System
VC:LVI:LVA:HSubsequent System
SC:LSI:LSA:LCVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:A/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L