Mozilla developers and community members reported memory safety bugs present in Firefox 62. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 63. References: https://bugzilla.mozilla.org/buglist.cgi?bug_id=1472639 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1485698 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1301547 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1471427 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1379411 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1482122 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1486314 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1487167
External References: https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12388
Statement: This flaw did not affect the Firefox 60 ESR stream.