Update to 52.5.0

Changelog:
Security fixes:
#CVE-2017-7828: Use-after-free of PressShell while restyling layout

Reporter
    Nils
Impact
    critical

Description

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.

References

    Bug 1406750
    Bug 1412252

#CVE-2017-7830: Cross-origin URL information leak through Resource Timing API

Reporter
    Jun Kokatsu
Impact
    high

Description

The Resource Timing API incorrectly revealed navigations in cross-origin
iframes. This is a same-origin policy violation and could allow for
data theft of URLs loaded by users.

References

    Memory safety bugs fixed in Firefox 57

#CVE-2017-7826: Memory safety bugs fixed in Firefox 57 and Firefox ESR 52.5

Reporter
    Mozilla developers and community
Impact
    critical

Description

Mozilla developers and community members Christian Holler, David
Keeler, Jon Coppeard, Julien Cristau, Jan de Mooij, Jason Kratzer,
Philipp, Nicholas Nethercote, Oriol Brufau, Andr辿 Bargull, Bob Clary,
Jet Villegas, Randell Jesup, Tyson Smith, Gary Kwong, and Ryan VanderMeulen
reported memory safety bugs present 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.

References

    Memory safety bugs fixed in Firefox 57 and Firefox ESR 52.5


(ryoon)