Vulnerability identifier: #VU10699

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6926

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Drupal
Web applications / CMS

Vendor: Drupal

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists improper permissions controls in the comment system. A remote attacker permission to post comments can view content and comments he doesn't have access to, and is also able to add comments to this content.

Mitigation
Update to version 8.4.5.

Vulnerable software versions

Drupal: 8.4.0 - 8.4.4

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External links
http://www.drupal.org/sa-core-2018-001

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.