Vulnerability in Authentikat-Jwt Project
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 token to guess bit after bit of the signature by repeating validation requests.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
References
- github.com/jasongoodwin/authentikat-jwt/commit/2d2fa0d40ac8f2f7aa7e9b070fa1a25e… (Patch, Third Party Advisory)
- github.com/jasongoodwin/authentikat-jwt/issues/12 (Third Party Advisory, Issue Tracking)
- github.com/jasongoodwin/authentikat-jwt/pull/36 (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-18239?
- CVE-2017-18239 is a critical-severity vulnerability in Authentikat-Jwt Project. CVSS score: 9.8/10. Published 2018-03-18.
- How severe is CVE-2017-18239?
- Critical severity. CVSS v3 base score is 9.8 out of 10.