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dotCMS template permissions allow arbitrary code execution

Vulnerability Note VU#898083

Original Release Date: 2012-05-25 | Last Revised: 2012-05-25

Overview

The dotCMS content management system version 1.9 and possibly earlier versions, contains a vulnerability that allows users with the appropriate permissions to create a malicious template with arbitrary code.

Description

An authenticated dotCMS user with the permissions required to author and upload templates may create a malicious XSLT or Velocity template that can execute arbitrary java code. The arbitrary java code will run with the permissions of the web service account.

Impact

An authenticated attacker with the permissions to create a template may upload a malicious XSLT or Velocity template that can run arbitrary java code. In some cases, the attacker may be able to exploit this vulnerability to obtain a shell on the web server.

Solution

Apply an Update

dotCMS version 1.9.5.1 or 2.0.1 and later address these vulnerabilities. If you are unable to upgrade please consider the following workarounds.

Workarounds

Unmap the XSLT Tool in the toolbox.xml file or apply this XSLT Tool which is backported from 2.0 to 1.9

Add to system.properties the property: runtime.introspector.uberspect = org.apache.velocity.util.introspection.SecureUberspector

Vendor Information

898083
Expand all

dotCMS

Notified:  April 13, 2012 Updated:  May 01, 2012

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

There are no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base 8.5 AV:N/AC:M/Au:S/C:C/I:C/A:C
Temporal 6.9 E:POC/RL:U/RC:UC
Environmental 6.9 CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Ben Murphy for reporting this vulnerability.

This document was written by Jared Allar.

Other Information

CVE IDs: CVE-2012-1826
Date Public: 2012-05-25
Date First Published: 2012-05-25
Date Last Updated: 2012-05-25 12:26 UTC
Document Revision: 25

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