Debian: DSA-3987-1 High Threat: Firefox-Esr Multiple Issues

Several security issues have been found in the Mozilla Firefox web
browser: Multiple memory safety errors, use-after-frees, buffer
overflows and other implementation errors may lead to the execution of
arbitrary code, denial of service, cross-site scripting or bypass of
the phishing and malware protection feature.

For the oldstable distribution (jessie), these problems have been fixed
in version 52.4.0esr-1~deb8u1.

For the stable distribution (stretch), these problems have been fixed in
version 52.4.0esr-1~deb9u1.

We recommend that you upgrade your firefox-esr 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/