GSX Analyzer 10.12 / 11 Backdoor Account
Posted on 13 July 2016
# Exploit Title: GSX Analyzer hardcoded superadmin credentials in Main.swf # Google Dork: inurl:"/Main.swf?cachebuster=" (need to manually look for stringtitle "Loading GSX Analyzer ... 0%") # Date: 12-07-16 # Exploit Author: ndevnull # Vendor Homepage: http://www.gsx.com/products/gsx-analyzer # Software Link: http://www.gsx.com/download-the-trial-ma # Version: 10.12, but also found in version 11 # Tested on: Windows Server 2008 # CERT : VR-241 # CVE : 1. Description After decompiling the SWF file "Main.swf", a hardcoded credential in one of the products of GSX, namely GSX Analyzer, has been found. Credential is a superadmin account, which is not listed as a user in the userlist, but can be used to login GSX Analyzer portals. Seemingly a backdoor or a "solution" to provide "support" from the vendor. The found credentials are: Username: gsxlogin Password: gsxpassword 2. Proof of Concept A few sites externally on the internet are affected by this incident. Presumably all of the externally disclosed GSX analyzer portals have this vulnerability. Code snippet: ----------------- if ((((event.getLogin().toLowerCase() == "gsxlogin")) && ((event.getPwd() == "gsxpassword")))){ ----------------- 3. Solution: Vendor has been informed on 12-06-16, also CERT has been notified with ID VR-241
