Signature Validation Bypass Affecting com.inversoft:prime-jwt package, versions [,1.3.0)


0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.19% (56th percentile)
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NVD
9.8 critical

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  • Snyk ID SNYK-JAVA-COMINVERSOFT-32119
  • published 15 Mar 2018
  • disclosed 30 Jan 2017
  • credit dmak

How to fix?

Upgrade com.inversoft:prime-jwt to version 1.3.0 or higher.

Overview

com.inversoft:prime-jwt is a simple to use Java 8 JWT Library.

Affected versions of this package are vulnerable to Signature Validation Bypass. It contains an input validation vulnerability in JWTDecoder.decode that can result in a JWT that is decoded and thus implicitly validated even if it lacks a valid signature. This attack appears to be exploitable via an attacker crafting a token with a valid header and body and then requests it to be validated.