When using Alt-Svc, ALPN did not properly validate certificates when the original server is redirecting to an insecure site. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
{
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{
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"binary_name": "firefox-dev"
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{
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{
"binary_version": "134.0+build1-0ubuntu0.20.04.1",
"binary_name": "firefox-mozsymbols"
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],
"availability": "No subscription required"
}