CVE-2017-18239

EUVD-2018-0729
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 60%
Affected Products (NVD)
VendorProductVersion
authentikat-jwt_projectauthentikat-jwt
𝑥
≤ 0.4.5
𝑥
= Vulnerable software versions
References
https://github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25eee082cb0
https://github.com/jasongoodwin/authentikat-jwt/issues/12
https://github.com/jasongoodwin/authentikat-jwt/pull/36
https://github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25eee082cb0
https://github.com/jasongoodwin/authentikat-jwt/issues/12
https://github.com/jasongoodwin/authentikat-jwt/pull/36