LSV-408: Remote Code Execution using Journal/DDM templates

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 6.2 EE GA1 (6.2.10), 7.0 DE (7.0.10), 7.1 DXP (7.1.10)
• Fix Version/s: 7.0.X EE, 7.1.x EE
• Component/s: Portal Services > Templates Engine, Security Vulnerability
• Labels:
  • liferay-dxp-71-sp1
  • liferay-fixpack-de-65-7010
  • liferay-fixpack-dxp-3-7110
  • liferay-fixpack-portal-170-6210
  • lsv
  • lsv-408
  • sev-1
• Fix Pack Status: Scheduled
• 7.0 Fix Pack Version: 65
• 7.1 Fix Pack Version: 3

https://help.liferay.com/hc/en-us/articles/360028821571

Liferay DXP 7.0, Liferay DXP 7.1, Liferay Portal 6.2 EE and Liferay Portal 6.1 EE is vulnerable to remote code execution using Web Content/DDM templates.

Solution Notes

• DXP: Default list of "Restricted Classes" for FreeMarker Engine and Velocity Engine configurations in System Settings have been modified: added java.lang.Compiler|java.lang.Package|java.lang.Process|java.lang.Runtime|java.lang.RuntimePermission|java.lang.SecurityManager|java.lang.System|java.lang.ThreadGroup|java.lang.ThreadLocal. Deployments using a customized list should be reviewed to apply the changes.
• 6.2: The following portal properties have been updated as shown below. Deployments using a customized list should be reviewed to apply the changes.

      freemarker.engine.restricted.classes=\
          java.lang.Class,\
          java.lang.ClassLoader,\
          java.lang.Compiler,\
          java.lang.Package,\
          java.lang.Process,\
          java.lang.Runtime,\
          java.lang.RuntimePermission,\
          java.lang.SecurityManager,\
          java.lang.System,\
          java.lang.Thread,\
          java.lang.ThreadGroup,\
          java.lang.ThreadLocal
  
      velocity.engine.restricted.classes=\
          java.lang.Class,\
          java.lang.ClassLoader,\
          java.lang.Compiler,\
          java.lang.Package,\
          java.lang.Process,\
          java.lang.Runtime,\
          java.lang.RuntimePermission,\
          java.lang.SecurityManager,\
          java.lang.System,\
          java.lang.Thread,\
          java.lang.ThreadGroup,\
          java.lang.ThreadLocal