Vulnerability identifier: #VU21309

Vulnerability risk: High

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-8908

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wtcms
Web applications / CMS

Vendor: taosir

Description

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

The vulnerability exists due to improper input validation in a ".php" filename and the "Content-Type: image/gif" header. A remote attacker can send a specially crafted request and execute arbitrary PHP code by going to the "Setting -> Mailbox configuration -> Registration email template" screen, and uploading an image file.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

wtcms: 1.0

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External links
http://github.com/taosir/wtcms/issues/3

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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.