Time-Sensitive Bit-by-Bit Signature Guessing Vulnerability in authentikat-jwt

CVE-2017-18239 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:N

A time-sensitive equality check on the JWT signature in the JsonWebToken.validate method in main/scala/authentikat/jwt/JsonWebToken.scala in authentikat-jwt (aka com.jason-goodwin/authentikat-jwt) version 0.4.5 and earlier allows the supplier of a JWT token to guess bit after bit of the signature by repeating validation requests.

Learn more about our Web App Pen Testing.