A malicious web site can enter fullscreen mode while simultaneously triggering a WebAuthn prompt. This could have obscured the fullscreen notification and could have been leveraged in a spoofing attack. This vulnerability affects Firefox < 119.
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "119.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-dev",
"binary_version": "119.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-geckodriver",
"binary_version": "119.0+build2-0ubuntu0.20.04.1"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "119.0+build2-0ubuntu0.20.04.1"
}
]
}