Vulnerability identifier: #VU554

Vulnerability risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description
The vulnerability allows a remote user to perform CSRF attack and cause valid user deletion.
The weakness exists due to improper Forms API functionality. A malicous site can cause a user to unintentionally submit a form to a site where he is authenticated that leads to cross-site request forgery.
Successful exploitation of the vulnerability may cause CSRF that may result in user deletion.

Mitigation
Update to 5.3.
http://ftp.drupal.org/files/projects/drupal-5.3.tar.g

Vulnerable software versions

Drupal: 5.0 - 5.2

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External links
http://www.drupal.org/node/184348

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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.