The following two updates has been released for Debian 7 LTS:

[DLA 640-1] icedove security update
[DLA 641-1] ruby-activesupport-3.2 security update

[DLA 640-1] icedove security update

Package : icedove
Version : 1:45.3.0-1~deb7u1
CVE ID : CVE-2016-2836

Multiple security issues have been found in Icedove, Debian's version of
the Mozilla Thunderbird mail client: Multiple memory safety errors may
lead to the execution of arbitrary code or denial of service.

For Debian 7 "Wheezy", these problems have been fixed in version
1:45.3.0-1~deb7u1.

We recommend that you upgrade your icedove packages.

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

[DLA 641-1] ruby-activesupport-3.2 security update

Package : ruby-activesupport-3.2
Version : 3.2_3.2.6-6+deb7u3
CVE ID : CVE-2016-0753

Active Support in Ruby on Rails 4.1.x before 4.1.14.1, 4.2.x before
4.2.5.1, and 5.x before 5.0.0.beta1.1 supports the use of instance-level
writers for class accessors, which allows remote attackers to bypass
intended validation steps via crafted parameters.

For Debian 7 "Wheezy", these problems have been fixed in version
3.2_3.2.6-6+deb7u3.

We recommend that you upgrade your ruby-activesupport-3.2 packages.

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