Adobe ColdFusion Reflected Cross-Site Scripting Flaw
August 27, 2015
April 14, 2015
January 11, 2015
ColdFusion 10 and 11
A reflected cross-site scripting vulnerability was found in the post-authentication administrative panel for ColdFusion, an Adobe web application development platform. Due to the critical functionality in the administration panel, an attacker could leverage this vulnerability to execute arbitrary commands on the server.
Adobe was informed of this vulnerability on January 11, 2015. As part of the responsible disclosure process, we worked together to successfully remediate the issue. Affected versions of ColdFusion can be patched via the administration panel. A CVE has been released for this vulnerability, CVE-2015-0345.
The exploit payloads we developed for this vulnerability are located at the Bishop Fox GitHub.
An API used by ColdFusion to list folders and files in dynamic views contains a parameter named dir. The value of this parameter is reflected into the HTML response of any page that uses this functionality.
1. GET request made to a CFIDE administrative page to obtain the CSRF Token
2. POST request made to /CFIDE/administrator/scheduler/scheduleedit.cfm with the relevant parameters put in
3. POST request to run the now added task. A CFML shell is uploaded to /CFIDE/update_cf.log
4. POST request to change the 404 template and 500 template to execute /CFIDE/update_cf.log
Once the payload has been executed successfully, the ColdFusion shell will be available at /404.cfm, /500.cfm or by forcing 404/500 errors on the ColdFusion server.
Shubham Shah of Bishop Fox
By gaining remote command execution on a machine running ColdFusion, an attacker can access the internal network, databases, sensitive files and credentials, and the application source code. This level of access may allow a malicious user to easily compromise more assets on a network or in an organization.
Further details can be found in the accompanying blog post.