Several vulnerabilites 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 the stable distribution (stretch), these problems have been fixed in version 0.25-3.1+deb9u1.
We recommend that you upgrade your exiv2 packages.
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/