#VU6903 Cross-site request forgery in BigTree CMS - CVE-2017-9379

Vulnerability identifier: #VU6903

Vulnerability risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2017-9379

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BigTree CMS
Web applications / CMS

Vendor: BigTree CMS

Description
The vulnerability allows a remote attacker to perform CSRF attack.

The vulnerability exists due to absent validation of HTTP request origin in "\BigTree-CMS-4.2.18\core\admin\modules\dashboard\vitals-statistics\404\clear.php" and "\core\admin\modules\dashboard\vitals-statistics\404\create-301.php" scripts. A remote attacker can trick a logged-in administrator into visiting a specially crafted web page and delete contents of 404 page or create a HTTP 301 redirect to arbitrary website.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

BigTree CMS: 4.2 - 4.2.18

---

External links
https://github.com/bigtreecms/BigTree-CMS/issues/287

---

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.