apt - security update

It was discovered that APT, the high level package manager, does not
properly invalidate unauthenticated data
(
CVE-2014-0488), performs
incorrect verification of 304 replies
(
CVE-2014-0487), does not perform
the checksum check when the Acquire::GzipIndexes option is used
(
CVE-2014-0489) and does not properly perform validation for binary
packages downloaded by the apt-get download command
(
CVE-2014-0490).

For the stable distribution (wheezy), these problems have been fixed in
version 0.9.7.9+deb7u3.

For the unstable distribution (sid), these problems have been fixed in
version 1.0.9.

We recommend that you upgrade your apt packages.