APT before 1.0.9 does not verify downloaded files if they have been modified as indicated using the If-Modified-Since header, which has unspecified impact and attack vectors.
{ "ubuntu_priority": "high", "availability": "No subscription required", "binaries": [ { "binary_name": "apt", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "apt-doc", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "apt-transport-https", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "apt-utils", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "libapt-inst1.5", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "libapt-pkg-dev", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "libapt-pkg-doc", "binary_version": "1.0.1ubuntu2.3" }, { "binary_name": "libapt-pkg4.12", "binary_version": "1.0.1ubuntu2.3" } ] }