A drupal7 security update has been released for Debian GNU/Linux 9 LTS to address a vulnerability in the Archive_Tar library.

DLA 2721-1: drupal7 security update

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Debian LTS Advisory DLA-2721-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Gunnar Wolf
July 26, 2021   https://wiki.debian.org/LTS
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Package : drupal7
Version : 7.52-2+deb9u16
CVE ID : CVE-2021-32610

The Drupal project uses the pear Archive_Tar library, which has
released a security update that impacts Drupal.

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:
  https://security-tracker.debian.org/tracker/drupal7

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