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WordPress NextGEN Gallery 2.1.15 Cross Site Scripting / Path Traversal

WordPress NextGEN Gallery 2.1.15 Cross Site Scripting / Path Traversal
Posted Jan 4, 2016
Authored by CSW Research Lab

WordPress NextGEN Gallery version 2.1.15 suffers from cross site scripting and path traversal vulnerabilities.

tags | advisory, vulnerability, xss, file inclusion
SHA-256 | 49e1e75f47e02ed03e819eaf2101378354472145fcc703d907f45816cabb1c3a

WordPress NextGEN Gallery 2.1.15 Cross Site Scripting / Path Traversal

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Hi,

Details
================
# Title : Multiple Cross Site Scripting (XSS & Path Traversal Attack (LFI)
in NextGEN Gallery by Photocrati Version 2.1.15
# Affected Product : NextGEN Gallery by Photocrati Version 2.1.15
# Vendor Homepage :
https://wordpress.org/plugins/nextgen-gallery/developers/
# Vulnerability Type : Cross Site Scripting (XSS) & Path Traversal
Attack
# POC Github(XSS) : https://github.com/cybersecurityworks/Disclosed/issues/5
# POC Github(Path Traversal) :
https://github.com/cybersecurityworks/Disclosed/issues/2
# Risk : High
# Status : Not Fixed
# CVE Status : Not Assigned
# POC Video URL : https://www.youtube.com/watch?v=FYpOdlehFfo

Description
================
By using traversal attacks an attacker can know the exact structure of the
existing and hosted site on the server. Also, by exploiting a Cross-site
scripting vulnerability the attacker can hijack a logged in user’s session
by stealing cookies. This means that the malicious hacker can change the
logged in user’s password and invalidate the session of the victim while
the hacker maintains access.

Advisory Timeline
================
1. Multiple XSS:
================

17-02-2015 – Discovered in NextGen Gallery 2.0.66.33 version
17-02-2015 – Reported to plugins@wordpress.org
18-02-2015 – plugins@wordpress.org responded saying, "Thank you, we'll
inform NGG about this."
04-09-2015 – Reported the Same vulnerability not fixed in NextGen Gallery
2.1.10 version
11-09-2015 - Discovered again in NextGen Gallery 2.1.15 version along with
path variable
14-09-2015 - Reported on Multiple XSS on version 2.1.15 directly to
photocrati Vendor

2. LFI: Path Traversal attack
================

17-02-2015: Reported to WP Plugins on version on 2.0.66.33
18-02-2015: Acknowledged by WP Plugin, saying that vendor will be informed.
28-08-2015: Again Reported to WP Plugins on version 2.1.7
01-09-2015: Vulnerability status has been updated in the same.
14-09-2015: Reported the same Vulnerability exist on version 2.1.15
directly to photocrati Vendor

Mitigations
================
https://www.owasp.org/index.php/Cross-site_Scripting_(XSS)
https://www.owasp.org/index.php/Path_Traversal

Disclosure policy
================
This vulnerability will be published if we do not receive a response to
this report with 10 days.

Credits & Authors
================
sathish@cybersecurityworks.com from cybersecurityworks Pvt Ltd

About Cybersecurityworks
================
Cybersecurity Works is basically an auditing company passionate working on
findings & reporting security flaws & vulnerabilities on web application
and network. As professionals, we handle each client differently based on
their unique requirements. Visit our website for more information.

*Note: As per our disclosure policy, the mentioned vulnerability was
disclosed in public after so many failure in developer response
during follow ups happened in the month of October & November. (27-10-2015,
02-11-2015 & 12-11-2015).*
--
----------
Cheers !!!

Team CSW Research Lab <http://www.cybersecurityworks.com>
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