Debian 9: DLA-2721-1 Critical: Drupal7 Archive_Tar Security Issue

The vulnerability is mitigated by the fact that Drupal core's use of
the Archive_Tar library is not vulnerable, as it does not permit
symlinks.

Exploitation may be possible if contrib or custom code uses the
library to extract tar archives (for example .tar, .tar.gz, .bz2, or
.tlz) which come from a potentially untrusted source.

For Debian 9 stretch, this problem has been fixed in version
7.52-2+deb9u16.

We recommend that you upgrade your drupal7 packages.

For the detailed security status of drupal7 please refer to
its security tracker page at:

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS