The following updates has been released for Debian 7 LTS:

[SECURITY] [DLA 657-1] libarchive security update
[SECURITY] [DLA 658-1] icedove security update

[DLA 657-1] libarchive security update

Package : libarchive
Version : 3.0.4-3+wheezy4
CVE ID : CVE-2016-5418
Debian Bug : 837714

It was found that libarchive mishandled hardlink archive entries of
non-zero data size, possibly allowing remote attackers to to write to
arbitrary files via especially crafted archives.

For Debian 7 "Wheezy", these problems have been fixed in version
3.0.4-3+wheezy4.

We recommend that you upgrade your libarchive 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 658-1] icedove security update

Package : icedove
Version : 45.4.0-1~deb7u1
CVE ID : CVE-2016-5278, CVE-2016-5270, CVE-2016-5272, CVE-2016-5276, CVE-2016-5277, CVE-2016-5280, CVE-2016-5281, CVE-2016-5284, CVE-2016-5250, CVE-2016-5261, CVE-2016-5257

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
45.4.0-1~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