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pfSense: pfSense-SA-17_08.webgui: XSS vulnerability in the WebGUI

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pfSense: pfSense-SA-17_08.webgui: XSS vulnerability in the WebGUI

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
11/14/2017
Created
07/25/2018
Added
11/22/2017
Modified
02/20/2020

Description

A Cross-Site Scripting (XSS) vulnerability was found in diag_dns.php, a part of the pfSense software WebGUI, on version 2.3.4 and earlier (2.3.x branch) and on version 2.4.1 and earlier (2.4.x branch). On diag_dns.php, the "hostname" parameter was being utilized without encoding in a JavaScript variable which could be used as an XSS vector. Due to the lack of proper encoding on the affected variable susceptible 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.

Solution(s)

  • pfsense-upgrade-latest

References

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