SynopsisThe remote Debian host is missing a security-related update.
DescriptionMultiple security issues have been found in Thunderbird, which may lead to the execution of arbitrary code or denial of service.
Debian follows the extended support releases (ESR) of Thunderbird.
Support for the 45.x series has ended, so starting with this update we're now following the 52.x releases.
SolutionUpgrade the icedove packages.
For the oldstable distribution (jessie), these problems have been fixed in version 1:52.2.1-4~deb8u1.
For the stable distribution (stretch), these problems have been fixed in version 1:52.2.1-4~deb9u1.