A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. This vulnerability affects Firefox < 57.
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
},
{
"binary_name": "firefox-dev",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
},
{
"binary_name": "firefox-globalmenu",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
},
{
"binary_name": "firefox-testsuite",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "57.0+build4-0ubuntu0.16.04.5"
},
{
"binary_name": "firefox-dev",
"binary_version": "57.0+build4-0ubuntu0.16.04.5"
},
{
"binary_name": "firefox-globalmenu",
"binary_version": "57.0+build4-0ubuntu0.16.04.5"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "57.0+build4-0ubuntu0.16.04.5"
},
{
"binary_name": "firefox-testsuite",
"binary_version": "57.0+build4-0ubuntu0.16.04.5"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "57.0.1+build2-0ubuntu1"
},
{
"binary_name": "firefox-dev",
"binary_version": "57.0.1+build2-0ubuntu1"
},
{
"binary_name": "firefox-globalmenu",
"binary_version": "57.0.1+build2-0ubuntu1"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "57.0.1+build2-0ubuntu1"
},
{
"binary_name": "firefox-testsuite",
"binary_version": "57.0.1+build2-0ubuntu1"
}
]
}