Cross-site scripting in freeradius3 package for pfSense on FreeBSD

1) Cross-site scripting

EUVDB-ID: #VU22485

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-18667

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists in the "/usr/local/www/freeradius_view_config.php" file due to insufficient sanitization of user-supplied data when processing a filename. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Note: This vulnerability affects freeradius3 package before 0.15.7_3 for pfSense on FreeBSD

Mitigation

Vendor recommends to update the freeradius3 package to version 0.15.7_3.

Vulnerable software versions

pfsense (FreeBSD port): 2.3.0 - 2.4.4_3

External links

http://github.com/pfsense/FreeBSD-ports/commit/30b22b6b0db7b73732a5da346afca66dc244e02a

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.