Vulnerability identifier: #VU426

Vulnerability risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-3164

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description
The vulnerability allows attackers to get access to potentially sensitive information.
The vulnerability is caused by using of external URL. After victim visits specially crafted adress a malicious user can easily obtain valid user's data.
Successful exploitation of this vulnerability results in gaining access to potentially sensitive information by remote attacker.

Mitigation

Update 6.x to 6.38.

https://www.drupal.org/drupal-6.38-release-notes

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: 8.0 - 8.0.3, 6 - 6.37, 7.0 - 7.42

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

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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.