Cross-site scripting in freeradius3 package for pfSense on FreeBSD

Published: 2019-11-04 | Updated: 2019-11-04
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-18667
CWE ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software pfsense (FreeBSD port) Subscribe
Vendor Rubicon Communications

Security Advisory

This security advisory describes one low risk vulnerability.

1) Cross-site scripting

Severity: Low

CVSSv3: 5.3 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-18667

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

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, 2.3.0_1, 2.3.1, 2.3.1_1, 2.3.1_5, 2.3.2, 2.3.2_1, 2.3.3, 2.3.3_1, 2.3.4, 2.3.4_1, 2.3.5, 2.3.5_1, 2.3.5_2, 2.4.0, 2.4.1, 2.4.2, 2.4.2_1, 2.4.3, 2.4.3_1, 2.4.4, 2.4.4_1, 2.4.4_2, 2.4.4_3

CPE External links

https://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.