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.
Upstream:released (7.56-1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Trusty/esm:DNE (trusty was needed)
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
More Information

Updated: 2019-04-26 14:23:32 UTC (commit 30899e40836d26e1bb5f0b072d31fd87b6cf3bd4)