The HTTP Alternative Services header, Alt-Svc, can be used by a malicious site to scan all TCP ports of any host that the accessible to a user when web content is loaded. This vulnerability affects Firefox < 68.
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "68.0+build3-0ubuntu0.16.04.1",
"binary_name": "firefox"
},
{
"binary_version": "68.0+build3-0ubuntu0.16.04.1",
"binary_name": "firefox-dev"
},
{
"binary_version": "68.0+build3-0ubuntu0.16.04.1",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "68.0+build3-0ubuntu0.16.04.1",
"binary_name": "firefox-globalmenu"
},
{
"binary_version": "68.0+build3-0ubuntu0.16.04.1",
"binary_name": "firefox-mozsymbols"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_version": "68.0+build3-0ubuntu0.18.04.1",
"binary_name": "firefox"
},
{
"binary_version": "68.0+build3-0ubuntu0.18.04.1",
"binary_name": "firefox-dev"
},
{
"binary_version": "68.0+build3-0ubuntu0.18.04.1",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "68.0+build3-0ubuntu0.18.04.1",
"binary_name": "firefox-globalmenu"
},
{
"binary_version": "68.0+build3-0ubuntu0.18.04.1",
"binary_name": "firefox-mozsymbols"
}
]
}