Security fix for the ALT Linux 10 package firefox-esr version 52.3.0-alt1

Aug. 8, 2017 Andrey Cherepanov 52.3.0-alt1

- New ESR version (52.3.0)
- Security fixes:
  + CVE-2017-7798: XUL injection in the style editor in devtools
  + CVE-2017-7800: Use-after-free in WebSockets during disconnection
  + CVE-2017-7801: Use-after-free with marquee during window resizing
  + CVE-2017-7809: Use-after-free while deleting attached editor DOM node
  + CVE-2017-7784: Use-after-free with image observers
  + CVE-2017-7802: Use-after-free resizing image elements
  + CVE-2017-7785: Buffer overflow manipulating ARIA attributes in DOM
  + CVE-2017-7786: Buffer overflow while painting non-displayable SVG
  + CVE-2017-7806: Use-after-free in layer manager with SVG
  + CVE-2017-7753: Out-of-bounds read with cached style data and pseudo-elements
  + CVE-2017-7787: Same-origin policy bypass with iframes through page reloads
  + CVE-2017-7807: Domain hijacking through AppCache fallback
  + CVE-2017-7792: Buffer overflow viewing certificates with an extremely long OID
  + CVE-2017-7804: Memory protection bypass through WindowsDllDetourPatcher
  + CVE-2017-7791: Spoofing following page navigation with data: protocol and modal alerts
  + CVE-2017-7782: WindowsDllDetourPatcher allocates memory without DEP protections
  + CVE-2017-7803: CSP containing 'sandbox' improperly applied
  + CVE-2017-7779: Memory safety bugs fixed in Firefox 55 and Firefox ESR 52.3