Memory corruption

Memory safety bugs were reported in Firefox 56 and Firefox ESR 52.4. 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 57, Firefox ESR 52.5, and Thunderbird...

Security vulnerabilities fixed in Thunderbird 52.5 — Mozilla

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. The Resource Timing API incorrectly revealed navigations in cross-origin iframes. Th...