Insecure Randomness Affecting org.apereo.cas:cas-server-support-shell package, versions [,6.1.0-RC5)


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.19% (56th percentile)
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NVD
8.1 high

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  • Snyk ID SNYK-JAVA-ORGAPEREOCAS-467404
  • published 20 Sep 2019
  • disclosed 20 Sep 2019
  • credit Jonathan Leitschuh

How to fix?

Upgrade org.apereo.cas:cas-server-support-shell to version 6.1.0-RC5 or higher.

Overview

org.apereo.cas:cas-server-support-shell is a package for the CAS command-line shell provides the ability to query the CAS server for help on available settings/modules and various other utility functions.

Affected versions of this package are vulnerable to Insecure Randomness. A insecure source of randomness is used to generate all of its random values as it relies upon apache commons lang3 RandomStringUtils. This could allow an attacker to possibly generate their own unique Ticket ID due to insufficient randomness.