When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox < 55.
{
"binaries": [
{
"binary_name": "firefox",
"binary_version": "55.0.1+build2-0ubuntu0.14.04.2"
},
{
"binary_name": "firefox-dev",
"binary_version": "55.0.1+build2-0ubuntu0.14.04.2"
},
{
"binary_name": "firefox-globalmenu",
"binary_version": "55.0.1+build2-0ubuntu0.14.04.2"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "55.0.1+build2-0ubuntu0.14.04.2"
},
{
"binary_name": "firefox-testsuite",
"binary_version": "55.0.1+build2-0ubuntu0.14.04.2"
}
],
"availability": "No subscription required"
}
{
"binaries": [
{
"binary_name": "firefox",
"binary_version": "55.0.1+build2-0ubuntu0.16.04.2"
},
{
"binary_name": "firefox-dev",
"binary_version": "55.0.1+build2-0ubuntu0.16.04.2"
},
{
"binary_name": "firefox-globalmenu",
"binary_version": "55.0.1+build2-0ubuntu0.16.04.2"
},
{
"binary_name": "firefox-mozsymbols",
"binary_version": "55.0.1+build2-0ubuntu0.16.04.2"
},
{
"binary_name": "firefox-testsuite",
"binary_version": "55.0.1+build2-0ubuntu0.16.04.2"
}
],
"availability": "No subscription required"
}