Vulnerability identifier: #VU29136

Vulnerability risk: High

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

CVE-ID: CVE-2020-13664

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page  that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability.

Windows servers are most likely to be affected.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Drupal: 9.0.0 - 9.0.0 rc1, 8.9.0 - 8.9.0 rc1, 8.8.0 - 8.8.7

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External links
http://www.drupal.org/sa-core-2020-005

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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.