A grilo security updatehas been released for Debian GNU/Linux 9 LTS to address a vulnerability that can lead to network MITM attacks.

DLA 2762-1: grilo security update

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Debian LTS Advisory DLA-2762-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
September 22, 2021   https://wiki.debian.org/LTS
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Package : grilo
Version : 0.3.2-2+deb9u1
CVE ID : CVE-2021-39365

An issue has been found in grilo, a framework for discovering and browsing
media. Due to missing TLS certificate verification, users are vulnerable
to network MITM attacks.

For Debian 9 stretch, this problem has been fixed in version
0.3.2-2+deb9u1.

We recommend that you upgrade your grilo packages.

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

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