pfsense 2.3.2: XSSDate: 2017-03-24 10:00:00
|Affected Product:||pfsense 2.3.2|
|Fixed Version Link:||https://pfsense.org/download/|
|Reported to vendor:||02/06/2017|
|Disclosed to public:||03/24/2017|
|Release mode:||Coordinated Release|
|CVE:||requested via DWF|
|Credits||Tim Coen of curesec GmbH|
pfsense is an open source firewall. The web interface is written in PHP. In version 2.3.2-RELEASE (amd64), it is vulnerable to reflected XSS. XSS can lead to disclosure of cookies, session tokens etc.
CVSS: Medium; 6.1 https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Description: When performing a package reinstall via the package manager, the "from" and "to" parameter are vulnerable to reflected XSS.
Proof of Concept:
http://192.168.178.60/pkg_mgr_install.php?mode=reinstallpkg&pkg=pfSense-pkg-arping&from='"><img src=no onerror=alert(1)>&to='"><img src=no onerror=alert(1)>
Note that while the "pkg" parameter must be a valid package, it does not need to actually be installed on the system.
pkg_mgr_install.php <?=sprintf(gettext('Confirmation Required to upgrade package %1$s from %2$s to %3$s.'), $pkgname, $_GET['from'], $_GET['to'])?>
CVSS: Medium; 4.7 https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Description: The pkg_filter Parameter of the pkg.php file is vulnerable to reflected XSS. It should be noted that the xml Parameter must point to an existing xml file, which must contain a field with the type sorting and the include_filtering_inputbox tag set. According to the vendor, the FreeRADIUS package is affected.
Proof of Concept:
192.168.10.150/pkg.php?xml=miniupnpd.xml&pkg_filter='"><img src=no onerror=alert(1)>
pkg.php echo " Filter text: <input id='pkg_filter' name='pkg_filter' value='" . $_REQUEST['pkg_filter'] . "' /> <input type='submit' value='Filter' />";
To mitigate this issue please upgrade at least to version 2.3.3:
Please note that a newer version might already be available.
5. Report Timeline
|02/06/2017||Informed Vendor about Issue|
|02/07/2017||Vendor confirms + fixes issues in git|
|02/20/2017||Vendor relases fix + vendor advisory|
|03/24/2017||Disclosed to public|