Vulnerability identifier: #VU18733

Vulnerability risk: Medium

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

CVE-ID: CVE-2019-10866

CWE-ID: CWE-89

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Form Maker by 10Web – Mobile-Friendly Drag & Drop Contact Form Builder
Web applications / Modules and components for CMS

Vendor: WebDorado Form Builder Team

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data passed to the "get_labels_parameters" function from the form-maker/admin/models/Submissions_fm.php file  with a crafted value of the "asc_or_desc" parameter. A remote authenticated attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

PoC:

,(case+when+(select+sleep(5)+from+wp_formmaker_submits+limit+1)+then+1+else+2+end)+asc+--+

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Form Maker by 10Web – Mobile-Friendly Drag & Drop Contact Form Builder: 1.5 - 1.13.2

---

External links
http://seclists.org/fulldisclosure/2019/May/8
http://wordpress.org/plugins/form-maker/#developers

---

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. However, proof of concept for this vulnerability is available.