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Document Title:
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===============
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phpCollab v2.5 CMS - SQL Injection Vulnerability
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References (Source):
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====================
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http://www.vulnerability-lab.com/get_content.php?id=1898
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Release Date:
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=============
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2016-08-08
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Vulnerability Laboratory ID (VL-ID):
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====================================
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1898
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Common Vulnerability Scoring System:
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====================================
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6.6
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Product & Service Introduction:
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===============================
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phpCollab is an open source internet-enabled system for use in projects that require collaboration over the internet. Those organizations,
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such as consulting firms, that rely on a division between firm-side and client-side information will benefit most from use of phpCollab.
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Abstract Advisory Information:
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==============================
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The vulnerability laboratory research team discovered a remote sql-injection web vulnerability in the official phpCollab v2.5 content management system.
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Vulnerability Disclosure Timeline:
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==================================
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2016-08-08: Public Disclosure (Vulnerability Laboratory)
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Discovery Status:
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=================
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Published
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Affected Product(s):
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====================
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phpCollab Community
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Product: phpCollab - Content Management System 2.5
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Exploitation Technique:
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=======================
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Remote
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Severity Level:
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===============
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High
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Technical Details & Description:
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================================
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A remote sql-injection web vulnerability has been discovered in the official phpCollab v2.5 content management system.
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The vulnerability allows remote attackers to execute own malicious sql commands to compromise the application or dbms.
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The sql-injection vulnerability is located in the `id` parameter of the `./phpcollab/users/` module GET method request.
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Remote attackers are able to execute own sql commands by usage of the insecure `emailusers.php` file GET method request.
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The attack vector of the vulnerability is application-side and the request method to inject is GET The vulnerability
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is a classic select remote sql-injection.
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The security risk of the vulnerability is estimated as high with a cvss (common vulnerability scoring system) count of 6.6.
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Exploitation of the remote sql injection web vulnerability requires no user interaction or privileged web-application user account.
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Successful exploitation of the remote sql injection results in database management system, web-server and web-application compromise.
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Request Method(s):
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[+] GET
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Vulnerable Module(s):
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[+] ./phpcollab/users/
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Vulnerable File(s):
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[+] emailusers.php
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Vulnerable Parameter(s):
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[+] id
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Proof of Concept (PoC):
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=======================
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The remote sql-injection web vulnerability can be exploited by remote attackers without privileged web-application user account and without user interaction.
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For security demonstration or to reproduce the sql-injection web vulnerability follow the provided information and steps below to continue.
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PoC: Exploitation
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http://phpcollab.localhost:8080/phpcollab/users/emailusers.php?id=1'[SQL-INJECTION VULNERABILITY!]&&PHPSESSID=ghtu76jt276nji04lua07930t5
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--- Error Exception Logs [SQL] ---
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You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
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-
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You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 2
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-
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You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3
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--- PoC Session Logs [GET] ---
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Status: 200[OK]
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GET http://phpcollab.localhost:8080/phpcollab/users/emailusers.php?id=1%27&&PHPSESSID=ghtu76jt276nji04lua07930t5
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Mime Type[text/html]
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Request Header:
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Host[phpcollab.localhost:8080]
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User-Agent[Mozilla/5.0 (Windows NT 10.0; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0]
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Cookie[PHPSESSID=ghtu76jt276nji04lua07930t5; _pk_id.2.bb5e=7b20cb9175a196a9.1470585617.1.1470586689.1470585617.;
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_pk_ref.2.bb5e=%5B%22%22%2C%22%22%2C1470585617%2C%22http%3A%2F%2Fphpcollab.localhost:8080%2Fdemo%2F1%2F394%2FStash%22%5D; _pk_ses.2.bb5e=*]
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Connection[keep-alive]
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Cache-Control[max-age=0]
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Response Header:
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Server[nginx/1.2.1]
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Content-Type[text/html]
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Transfer-Encoding[chunked]
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Connection[keep-alive]
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X-Powered-By[PHP/5.5.27-1+deb.sury.org~precise+1]
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Reference(s):
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http://phpcollab.localhost:8080/
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http://phpcollab.localhost:8080/phpcollab/
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http://phpcollab.localhost:8080/phpcollab/users/
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http://phpcollab.localhost:8080/phpcollab/users/emailusers.php
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Solution - Fix & Patch:
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=======================
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The vulnerability can be patched by usage of a prepared statement in the emailusers.php file GET method request.
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Disallow special chars and escape the input and outpit context entries to prevent further sql-injection attacks.
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Security Risk:
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==============
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The security risk of the remote sql-injection web vulnerability in the id parameter of the emailusers.php file is estimated as high. (CVSS 6.6)
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Credits & Authors:
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==================
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Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (http://www.vulnerability-lab.com/show.php?user=Benjamin%20K.M.)
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Disclaimer & Information:
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=========================
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The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied,
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including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage,
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including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised
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of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing
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limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, deface websites, hack into databases or trade with stolen data.
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Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™
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--
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VULNERABILITY LABORATORY - RESEARCH TEAM
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SERVICE: www.vulnerability-lab.com |