Package : exim4 Version : 4.80-7+deb7u4 CVE ID : CVE-2016-9963
Bjoern Jacke discovered that Exim, Debian's default mail transfer agent, may leak the private DKIM signing key to the log files if specific configuration options are met.
For Debian 7 "Wheezy", these problems have been fixed in version 4.80-7+deb7u4.
We recommend that you upgrade your exim4 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