A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "56",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Firefox ESR",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "52.4",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "52.4",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]
www.securityfocus.com/bid/101055
www.securitytracker.com/id/1039465
access.redhat.com/errata/RHSA-2017:2831
access.redhat.com/errata/RHSA-2017:2885
bugzilla.mozilla.org/show_bug.cgi?id=1371889
lists.debian.org/debian-lts-announce/2017/11/msg00000.html
security.gentoo.org/glsa/201803-14
www.debian.org/security/2017/dsa-3987
www.debian.org/security/2017/dsa-4014
www.mozilla.org/security/advisories/mfsa2017-21/
www.mozilla.org/security/advisories/mfsa2017-22/
www.mozilla.org/security/advisories/mfsa2017-23/