CVE-2014-0003
The Apache Camel XSLT component allows XSL stylesheets to perform calls to external Java methods.
Description
The Apache Camel XSLT component allows XSL stylesheets to perform calls to external Java methods. A remote attacker able to submit messages to an xslt Camel route could use this flaw to perform arbitrary remote code execution in the context of the Camel server process.
Mitigation
Credit
This issue was discovered by David Jorm.
Notes
Example: Create a simple route which receives an HTTP request, apply a (safe) stylesheet and store the result in a file:
<route>
<from uri="servlet:///hello"/>
<to uri="xslt:file:/tmp/transform.xsl" />
<to uri="file:/tmp/output" />
</route>
If an attacker is able to submit a message to this route, they can provide a message that is an XML document containing external entities. These entities will be resolved, and their contents included in the output of the transformation performed by the xslt route.