The mirror:// method implementation in Advanced Package Tool (APT) 1.6.x before 1.6.4 and 1.7.x before 1.7.0~alpha3 mishandles gpg signature verification for the InRelease file of a fallback mirror, aka mirrorfail.
[
{
"product": "APT 1.6.x before 1.6.4 and 1.7.x before 1.7.0~alpha3",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "APT 1.6.x before 1.6.4 and 1.7.x before 1.7.0~alpha3"
}
]
}
]