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pfSense: pfSense-SA-17_03.webgui: Multiple XSS and CSRF Vulnerabilities in the WebGUI

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pfSense: pfSense-SA-17_03.webgui: Multiple XSS and CSRF Vulnerabilities in the WebGUI

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/10/2017
Created
07/25/2018
Added
08/25/2017
Modified
02/20/2020

Description

Multiple Cross-Site Scripting (XSS) vulnerabilities and one CSRF issue were found in the pfSense software WebGUI on version 2.3.2_1 and earlier. On pkg_mgr_install.php, the "from" and "to" parameter are vulnerable to reflected XSS when performing a reinstall action. On pkg.php, the "pkg_filter" parameter is vulnerable to reflected XSS when a package XML file contains a field type of "sorting" which also has "include_filtering_inputbox" active. Currently the only affected package is FreeRADIUS ( freeradius.xml and freeradiusauthorizedmacs.xml both meet these conditions ). The easyrule.php script uses GET variables to, making it possible to add new firewall rules via CSRF. Due to the lack of proper encoding on the affected variables and pages succeptible to XSS, arbitrary JavaScript can be executed in the user's browser. The user's session cookie or other information from the session may be compromised. Due to the use of GET on easyrule.php, a firewall administrator could unknowingly create an unwanted firewall rule if they are the victim of a CSRF attack.

Solution(s)

  • pfsense-upgrade-latest

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