CVE-2017-18239: Moderate severity vulnerability that affects com.jason-goodwin:authentikat-jwt_2.12

November 9, 2018 (updated August 31, 2021)

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.

References

github.com/advisories/GHSA-3rhm-67j6-42jq
github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25eee082cb0
github.com/jasongoodwin/authentikat-jwt/issues/12
github.com/jasongoodwin/authentikat-jwt/pull/36
nvd.nist.gov/vuln/detail/CVE-2017-18239

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