Denial of service in Drupal Drupal

1) Denial of service

EUVDB-ID: #VU424

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-3162

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The weakness allows attackers to cause denial of service on the target system.
The vulnerability is caused by attacker's influence on files uploaded by a valid user. A malicious user can read and change the links to the uploaded files locating in unsubmitted forms. Continuous attacks can lead to complete blockage of the uploaded files and deleting of temporary files.
Successful exploitation of this vulnerability results in denial of service on the vulnerable system.

Mitigation

Update 7.x to 7.43.
https://www.drupal.org/project/drupal/releases/7.43
Update 8.0.x to 8.0.4
https://www.drupal.org/project/drupal/releases/8.0.4

Vulnerable software versions

Drupal: 7.0 - 8.0.3

External links

http://www.drupal.org/SA-CORE-2016-001

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.