CVE-2017-18239
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.96% probability · 79th percentile
- CISA KEV
- Not listed
- Affected
- authentikat-jwt project/authentikat-jwt
- Source
- cve@mitre.org
References
- https://github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25eee082cb0Patch, Third Party Advisory
- https://github.com/jasongoodwin/authentikat-jwt/issues/12Issue Tracking, Third Party Advisory
- https://github.com/jasongoodwin/authentikat-jwt/pull/36Issue Tracking, Third Party Advisory
- https://github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25eee082cb0Patch, Third Party Advisory
- https://github.com/jasongoodwin/authentikat-jwt/issues/12Issue Tracking, Third Party Advisory
- https://github.com/jasongoodwin/authentikat-jwt/pull/36Issue Tracking, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.