Arbitrary File Download in Duplicator – WordPress Migration Plugin

1) Improper Authentication

EUVDB-ID: #VU25481

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the "duplicator_download" action is registered via "wp_ajax_nopriv_" and is accessible to unauthenticated users. A remote attacker can bypass authentication process and download arbitrary files, such as the wp-config.php.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SnapCreek Duplicator: 1.3.0 - 1.3.26

External links

http://wpvulndb.com/vulnerabilities/10078/
http://www.wordfence.com/blog/2020/02/active-attack-on-recently-patched-duplicator-plugin-vulnerability-affects-over-1-million-sites/
http://snapcreek.com/duplicator/docs/changelog/?lite

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.