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.
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{ "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "thunderbird-globalmenu", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "thunderbird-testsuite", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:52.5.0+build1-0ubuntu0.14.04.1" } ], "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": "thunderbird", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "thunderbird-globalmenu", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "thunderbird-testsuite", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:52.5.0+build1-0ubuntu0.16.04.1" } ], "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" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "thunderbird", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-dev", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-globalmenu", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-gnome-support", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-mozsymbols", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "thunderbird-testsuite", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-calendar-timezones", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-gdata-provider", "binary_version": "1:52.6.0+build1-0ubuntu1" }, { "binary_name": "xul-ext-lightning", "binary_version": "1:52.6.0+build1-0ubuntu1" } ], "availability": "No subscription required" }