Arbitrary file upload in WP Live Chat Support Pro for WordPress

1) Arbitrary file upload

EUVDB-ID: #VU18802

Risk: High

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11185

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient patch for arbitrary file upload issue (SB2018070211, CVE-2018-12426). A remote non-authenticated attacker can bypass implemented security restrictions, upload dangerous files with .phtml, .php5, .pht, .asa and other extensions.

Successful exploitation of the vulnerability may allow a remote non-authenticated attacker to execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WP Live Chat Support: 8.0.07 - 8.0.25

External links

http://wordpress.org/plugins/wp-live-chat-support/#developers
http://blog.alertlogic.com/alert-logic-uncovers-new-vulnerability-in-wordpress-wp-live-chat-cve-201...

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.