Multiple security issues have been found in Icedove, Debian's version of the Mozilla Thunderbird mail client: multiple memory safety errors, use-after-frees and other implementation errors may lead to the execution of arbitrary code or denial of service. This update also addresses a vulnerability in DHE key processing commonly known as the LogJam vulnerability.
For the oldstable distribution (wheezy), these problems have been fixed in version 31.8.0-1~deb7u1.
For the stable distribution (jessie), these problems have been fixed in version 31.8.0-1~deb8u1.
For the unstable distribution (sid), these problems will be fixed shortly.
We recommend that you upgrade your icedove packages.