Simple Streams (simplestreams) does not properly verify the GPG signatures of disk image files, which allows remote mirror servers to spoof disk images and have unspecified other impact via a 403 (aka Forbidden) response.
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "0.1.0~bzr341-0ubuntu2.2",
"binary_name": "python-simplestreams"
},
{
"binary_version": "0.1.0~bzr341-0ubuntu2.2",
"binary_name": "python-simplestreams-openstack"
},
{
"binary_version": "0.1.0~bzr341-0ubuntu2.2",
"binary_name": "python3-simplestreams"
},
{
"binary_version": "0.1.0~bzr341-0ubuntu2.2",
"binary_name": "simplestreams"
}
]
}