CVE-2017-6922 Information

Description

In Drupal core 8.x prior to 8.3.4 and Drupal core 7.x prior to 7.56; Private files that have been uploaded by an anonymous user but not permanently attached to content on the site should only be visible to the anonymous user that uploaded them rather than all anonymous users. Drupal core did not previously provide this protection allowing an access bypass vulnerability to occur. This issue is mitigated by the fact that in order to be affected the site must allow anonymous users to upload files into a private file system.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

http://www.securityfocus.com/bid/99219 http://www.securitytracker.com/id/1038781 https://www.debian.org/security/2017/dsa-3897 https://www.drupal.org/forum/newsletters/security-advisories-for-drupal-core/2017-06-21/drupal-core-multiple

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

6.5