Multiple vulnerabilities in Page Builder: PageLayer – Drag and Drop website builder plugin for WordPress

1) Cross-site request forgery

EUVDB-ID: #VU28520

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: N/A

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in the settings update function. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website, leading to XSS.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Page Builder: PageLayer – Drag and Drop website builder: 0.9.0 - 1.1.1

External links

http://wpvulndb.com/vulnerabilities/10240/
http://www.wordfence.com/blog/2020/05/high-severity-vulnerabilities-in-pagelayer-plugin-affect-over-200000-wordpress-sites/

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.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU28521

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper permission checks in several AJAX actions, such as "wp_ajax_pagelayer_save_content", "wp_ajax_pagelayer_update_site_title" and "wp_ajax_pagelayer_save_template". A remote authenticated attacker can change any data on a page edited with PageLayer, change a site title or create new PageLayer templates that were saved as new posts.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Page Builder: PageLayer – Drag and Drop website builder: 0.9.0 - 1.1.1

External links

http://www.wordfence.com/blog/2020/05/high-severity-vulnerabilities-in-pagelayer-plugin-affect-over-200000-wordpress-sites/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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