click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers to install an alternate security policy and gain privileges via a crafted package, as demonstrated by the test.mmrow app for Ubuntu phone.
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "click",
"binary_version": "0.4.21.1ubuntu0.2"
},
{
"binary_name": "gir1.2-click-0.4",
"binary_version": "0.4.21.1ubuntu0.2"
},
{
"binary_name": "libclick-0.4-0",
"binary_version": "0.4.21.1ubuntu0.2"
},
{
"binary_name": "packagekit-plugin-click",
"binary_version": "0.4.21.1ubuntu0.2"
},
{
"binary_name": "python3-click",
"binary_version": "0.4.21.1ubuntu0.2"
}
]
}