Drupal Core announced multiple critical vulnerabilities
that impact some of its configurations for
versions: 8.8.x-dev, 8.7.x-dev, and 7.x-dev.The Drupal project uses the
third-party library Archive_Tar,
which released a security update - SA-CORE-2019-012, according to a Dec. 18
advisory.Multiple vulnerabilities are
possible if Drupal is configured to allow .tar, .tar.gz, .bz2 or .tlz file
uploads and processes them.The latest versions of Drupal
update Archive_Tar to 1.4.9 to mitigate the file processing
vulnerabilities.Drupal
also advises users to install the latest
versions:In
addition, updating to the Drupal 7.x core release will apply the fixes for all the
below:
- If you are using Drupal 7.x, upgrade to Drupal 7.69.
- If you are using Drupal 8.7.x, upgrade to Drupal 8.7.11.
- If you are using Drupal 8.8.x, upgrade to Drupal 8.8.1.



