WordPress Truemag Theme Cross Site Scripting
Posted on 29 April 2016
Document Title: =============== Wordpress Truemag Theme - Client Side Cross Site Scripting Web Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1839 Release Date: ============= 2016-04-29 Vulnerability Laboratory ID (VL-ID): ==================================== 1839 Common Vulnerability Scoring System: ==================================== 3.3 Product & Service Introduction: =============================== CactusThemes is an experienced and passionate web design team with over 8 years working together designing and developing themes and plugins. Our goal is to create the best WordPress themes for education, event, news, etc. and meet all your needs. (Copy of the Homepage: http://www.cactusthemes.com/#themes ) Abstract Advisory Information: ============================== An independent vulnerability laboratory researcher discovered a client-side cross site scripting vulnerability in the official Wordpress Truemag Theme. Vulnerability Disclosure Timeline: ================================== 2016-04-29: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== CactusThemes Product: Truemag Theme (Wordpress) - Theme (Web-Application) 2016 Q2 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A client-side cross site scripting web vulnerability has been discovered in the official Wordpress Truemag Theme web-application. The non-persistent vulnerability allows remote attackers to inject own malicious script code to client-side application to browser requests. The client-side cross site vulnerability is located in the `s` value of the page module GET method request. Remote attackers are able to inject own malicious script codes to the client-side of the online service web-application to compromise user session information or data. The request method to execute is GET and the attack vector is non-persistent. The security risk of the client-side web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.3. Exploitation of the non-persistent web vulnerability requires no privileged web application user account and low user interaction (click link). Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing, non-persistent external redirects, non-persistent load of malicious script codes or non-persistent web module context manipulation. Request Method(s): [+] GET Vulnerable Service(s): [+] Truemag Theme (Wordpress) Vulnerable Module(s): [+] /wp-contact/theme/truemag Vulnerable Parameter(s): [+] s Proof of Concept (PoC): ======================= The remote cross site 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. Dork(s): inurl: /wp-contact/theme/truemag PoC: Payload "><marquee><font color=black size=15>%20<script>alert(document.cookie)</script></font></marquee> PoC: Example http://wp.localhost:8080/?s=[CLIENT SIDE CROSS SITE SCRIPTING VULNERABILITY!] PoC: Exploitation http://wp.localhost:8080/?s="><marquee><font color=black size=15>%20<script>alert(document.cookie)</script></font></marquee> Reference(s): http://wp.localhost:8080/?s= Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure parse and encode of the vulnerable `s` value in the webpage GET method request. Encode the parameter and restrict the value input to prevent further script code injection attacks. Security Risk: ============== The security risk of the client-side cross site scripting web vulnerability in the vulnerbale `s` value is estimated as medium. (CVSS 3.3) Credits & Authors: ================== Iran Cyber Security Group - 0x3a (ICG SEC) [Iran-Cyber.Net] [http://www.vulnerability-lab.com/show.php?user=Iran%20Cyber%20Security] Special Thanks: root3r Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised 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 limitation may not apply. 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