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).