Cross-site scripting in FreePBX

1) Cross-site scripting

EUVDB-ID: #VU35789

Risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15891

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

Exploit availability: No

Description

The vulnerability allows a remote privileged user to read and manipulate data.

An issue was discovered in FreePBX core before 3.0.122.43, 14.0.18.34, and 5.0.1beta4. By crafting a request for adding Asterisk modules, an attacker is able to store JavaScript commands in a module name.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreePBX: 15.0.1

External links

http://wiki.freepbx.org/display/FOP/2018-09-11+Core+Stored+XSS?src=contextnavpagetreemode
http://www.freepbx.org/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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