Vulnerability identifier: #VU21310

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2019-8909

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wtcms
Web applications / CMS

Vendor: taosir

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the background verification code size can be controlled. A remote attacker can send a specially crafted dimensions for the verification code image, trigger resource exhaustion and perform a denial of service (DoS) attack.

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

Vulnerable software versions

wtcms: 1.0

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External links
http://github.com/taosir/wtcms/issues/6

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