A libmaxminddb security update has been released for Debian GNU/Linux 9 LTS to address a heap-based buffer over-read.

DLA 2445-1: libmaxminddb security update

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Debian LTS Advisory DLA-2445-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Markus Koschany
November 10, 2020   https://wiki.debian.org/LTS
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Package : libmaxminddb
Version : 1.2.0-1+deb9u1
CVE ID : CVE-2020-28241
Debian Bug : 973878

A heap-based buffer over-read has been found in libmaxminddb, an IP geolocation
database library. This could be exploited when the mmdblookup tool is used to
open a specially crafted database file.

For Debian 9 stretch, this problem has been fixed in version
1.2.0-1+deb9u1.

We recommend that you upgrade your libmaxminddb packages.

For the detailed security status of libmaxminddb please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/libmaxminddb

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