CVE-2017-6922

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.

How to fix CVE-2017-6922

To remediate CVE-2017-6922, upgrade the affected package to a fixed version below.

• —upgrade to 7.14-2+deb7u16 or later
• —upgrade to 7.32-1+deb8u9 or later
• —upgrade to 7.56 or later
• —upgrade to 8.3.4 or later

Is CVE-2017-6922 being exploited?

Low — EPSS is 1.7%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

• from 0, < 7.14-2+deb7u16
• from 0, < 7.32-1+deb8u9
• >= 7.0, < 7.56
• >= 8.0, < 8.3.4

CVSS scores

References (9)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2017-6922
• PATCHgithub.com/drupal/core
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/drupal/core/CVE-2017-6922.yaml
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/drupal/drupal/CVE-2017-6922.yaml