Severity: Important
Vendor:
The Apache Software Foundation
Versions Affected:
Roller 5.1.0
Roller 5.1.1
The unsupported Roller 5.1.0 versions may also be affected
Description:
A Roller user with Admin-level access to a weblog can edit a weblog
page template and use special Velocity syntax to execute Java code on
the server.
Mitigation:
There are several ways you can fix this vulnerability:
1) Upgrade to the latest version of Roller, which is now 5.1.2.
2) Or, add the following line to Roller's velocity.properties file:
runtime.introspector.uberspect=org.apache.velocity.util.introspection.SecureUberspector
3) Or, disable template editing on your Roller system by un-checking
the Allow Custom Themes setting in the Server Admin -> Configuration
page,
Theme Settings section.
Credit:
This issue was discovered by Gregory Draperi.
