An okular security update has been released for Debian GNU/Linux 9 LTS to address a code execution via an action link in a PDF document.
DLA 2856-1: okular security update
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Debian LTS Advisory DLA-2856-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Adrian Bunk
December 27, 2021 https://wiki.debian.org/LTS
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Package : okular
Version : 4:16.08.2-1+deb9u2
CVE ID : CVE-2020-9359
Debian Bug : 954891
Code execution via an action link in a PDF document was fixed in the
KDE document viewer Okular.
For Debian 9 stretch, this problem has been fixed in version
4:16.08.2-1+deb9u2.
We recommend that you upgrade your okular packages.
For the detailed security status of okular please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/okular
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
