CVE-2017-6928

Description

Drupal core 7.x versions before 7.57 when using Drupal's private file system, Drupal will check to make sure a user has access to a file before allowing the user to view or download it. This check fails under certain conditions in which one module is trying to grant access to the file and another is trying to deny it, leading to an access bypass vulnerability. This vulnerability is mitigated by the fact that it only occurs for unusual site configurations.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.29%
Vendor Advisory debian.org Vendor Advisory drupal.org
Affected: Drupal.org Drupal Core
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2018/dsa-4123 vendor advisory issue tracking
https://lists.debian.org/debian-lts-announce/2018/02/msg00030.html third party advisory mailing list
https://www.drupal.org/sa-core-2018-001 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-6928?
CVE-2017-6928 has been scored as a medium severity vulnerability.
How to fix CVE-2017-6928?
To fix CVE-2017-6928, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-6928 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-6928 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-6928?
CVE-2017-6928 affects Drupal.org Drupal Core.
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