A use-after-free vulnerability can occur when flushing and resizing layout because the “PressShell” object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "57",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Firefox ESR",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "52.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "52.5",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]
www.securityfocus.com/bid/101832
www.securitytracker.com/id/1039803
access.redhat.com/errata/RHSA-2017:3247
access.redhat.com/errata/RHSA-2017:3372
bugzilla.mozilla.org/show_bug.cgi?id=1406750
bugzilla.mozilla.org/show_bug.cgi?id=1412252
lists.debian.org/debian-lts-announce/2017/11/msg00018.html
lists.debian.org/debian-lts-announce/2017/12/msg00001.html
www.debian.org/security/2017/dsa-4035
www.debian.org/security/2017/dsa-4061
www.debian.org/security/2017/dsa-4075
www.mozilla.org/security/advisories/mfsa2017-24/
www.mozilla.org/security/advisories/mfsa2017-25/
www.mozilla.org/security/advisories/mfsa2017-26/