An exiv2 security update has been released for Debian GNU/Linux 9 LTS to address several vulnerabilities.

DLA 2750-1: exiv2 security update

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Debian LTS Advisory DLA-2750-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
August 30, 2021   https://wiki.debian.org/LTS
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Package : exiv2
Version : 0.25-3.1+deb9u3
CVE ID : CVE-2019-20421 CVE-2021-3482 CVE-2021-29457
CVE-2021-29473 CVE-2021-31291 CVE-2021-31292
Debian Bug : 950183 986888 987277 991705 991705 991706

Several vulnerabilities have been discovered in Exiv2, a C++ library
and a command line utility to manage image metadata which could result
in denial of service or the execution of arbitrary code if a malformed
file is parsed.

For Debian 9 stretch, these problems have been fixed in version
0.25-3.1+deb9u3.

We recommend that you upgrade your exiv2 packages.

For the detailed security status of exiv2 please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/exiv2

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