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Piwik 2.14.3 Local File Inclusion

Piwik 2.14.3 Local File Inclusion
Posted Nov 4, 2015
Authored by EgiX

Piwik version 2.14.3 and below suffer from a local file inclusion vulnerability.

tags | exploit, local, file inclusion
advisories | CVE-2015-7815
MD5 | fe2bdc1b138804dcc2295fdf128146e8

Piwik 2.14.3 Local File Inclusion

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Piwik <= 2.14.3 (viewDataTable) Autoloaded File Inclusion Vulnerability
-----------------------------------------------------------------------


[-] Software Link:

https://piwik.org/


[-] Affected Versions:

Version 2.14.3 and prior versions.


[-] Vulnerability Description:

The vulnerable code is located in the /core/ViewDataTable/Factory.php script:

130. $type = Common::getRequestVar('viewDataTable', $defaultType, 'string');
131.
132. // Common::getRequestVar removes backslashes from the defaultValue ...
133. // therefore do not pass this as a default value to getRequestVar()
134. if ('' === $type) {
135. $type = $defaultType ?: HtmlTable::ID;
136. }
137. } else {
138. $type = $defaultViewType;
139. }
140.
141. $params['viewDataTable'] = $type;
142.
143. $visualizations = Manager::getAvailableViewDataTables();
144.
145. if (array_key_exists($type, $visualizations)) {
146. return self::createViewDataTableInstance($visualizations[$type], ...
147. }
148.
149. if (class_exists($type)) {

User input passed through the "viewDataTable" request parameter is not properly sanitized
before being used in a call to the "class_exists()" function at line 149. This could be
exploited to include arbitrary .php files located outside the Piwik root directory or
from the Piwik codebase itself (possibly leading to unauthorized access to certain
functionalities) leveraging the Composer autoloading function. Successful exploitation
of this vulnerability requires the application running on PHP before 5.4.24 or 5.5.8.


[-] Solution:

Update to version 2.15.0 or later.


[-] Disclosure Timeline:

[25/08/2015] - Vendor notified
[09/09/2015] - Issue fixed on the GitHub repository: http://git.io/vlyZv
[06/10/2015] - CVE number requested
[14/10/2015] - CVE number assigned
[22/10/2015] - Version 2.15.0 released: https://piwik.org/changelog/piwik-2-15-0
[04/11/2015] - Public disclosure


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2015-7815 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2015-09


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