A raptor2 security update has been released for Debian GNU/Linux 9 LTS to address two heap overflow vulnerabilities.

DLA 2438-1: raptor2 security update

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Debian LTS Advisory DLA-2438-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Chris Lamb
November 07, 2020   https://wiki.debian.org/LTS
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Package : raptor2
Version : 2.0.14-1+deb9u1
CVE ID : CVE-2017-18926
Debian Bug : #973889

It was discovered that there were two heap overflow vulnerabilities
in raptor2, a set of parsers for RDF files that is used, amongst
others, in LibreOffice.

For Debian 9 "Stretch", this problem has been fixed in version
2.0.14-1+deb9u1.

We recommend that you upgrade your raptor2 packages.

For the detailed security status of raptor2 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/raptor2

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