Vulnerability identifier: #VU6850

Vulnerability risk: Medium

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-8402

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PivotX
Web applications / Forum & blogging software

Vendor: pivotlog.net

Description
The vulnerability allows a remote attacker to execute arbitrary PHP code on the target system.

The vulnerability exists due to insufficient validation of the uploaded files in "/pivotx/fileupload.php" script. A remote authenticated attacker can upload a specially crafted .htaccess files on the system and use it to execute arbitrary PHP code.

Successful exploitation may allow an attacker to compromise vulnerable website.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

PivotX: 2.3.0 - 2.3.11

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External links
http://sourceforge.net/p/pivot-weblog/code/4489/

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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.