[jira] [Created] (KNOX-2741) Upgrade to velocity 2.3 due to CVE-2020-13936

["Sandor Molnar (Jira)" <ji...@apache.org>]

Sandor Molnar created KNOX-2741:
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             Summary:  Upgrade to velocity 2.3 due to CVE-2020-13936
                 Key: KNOX-2741
                 URL: https://issues.apache.org/jira/browse/KNOX-2741
             Project: Apache Knox
          Issue Type: Task
            Reporter: Sandor Molnar
            Assignee: Sandor Molnar
             Fix For: 2.0.0


Knox is pulling in Velocity 1.7 which is vulnerable to CVE-2020-13926. Upgrade to Velocity 2.3 to address. The last 1.x release was 2010 so no new 1.x release to go to. See [https://velocity.apache.org/engine/2.3/upgrading.html] about upgrading to 2.x.

There is one very important side effect:
Upgrading Velocity to 2.3 makes Knox incompatible with the current Pac4J version if it is configured to use SAML:
{noformat}
HTTP ERROR 500 javax.servlet.ServletException: javax.servlet.ServletException: java.lang.NoClassDefFoundError: org/apache/velocity/runtime/log/LogChute
{noformat}
In Knox, we are using Pac4j 4.3.0 (including {{pac4j-saml-opensamlv3}}). In this version, the velocity is still on 1.7. In 4.5.2 they changed their velocity dependency to 2.3: [https://repo1.maven.org/maven2/org/pac4j/pac4j-saml-opensamlv3/4.5.2/pac4j-saml-opensamlv3-4.5.2.pom]



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