A drupal7 security update has been released for Debian GNU/Linux 9 LTS to address two vulnerabilities.

DLA 2466-1: drupal7 security update

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Debian LTS Advisory DLA-2466-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
November 27, 2020   https://wiki.debian.org/LTS
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Package : drupal7
Version : 7.52-2+deb9u13
CVE ID : CVE-2020-28948 CVE-2020-28949

Two vulnerabilities were found in the Archive_Tar PHP module, used by
Drupal, which could result in the execution of arbitrary code if a
malicious user is allowed to upload tar archives.

For Debian 9 stretch, these problems have been fixed in version
7.52-2+deb9u13.

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