Mozilla Firefox Version 58.0.1 Released with Critical Security Update

Mozilla sent Firefox Version 58.0.1 to the release channel today.  The critical security update was issued to fix Bug 1433065 which resulted in Firefox 58 not loading any pages (including about: pages) when using certain non-default security policies on Windows (for example with Windows Defender Exploit Protection or Webroot security products).

ESR was not affected by this but.

Security Update

Critical

• Arbitrary code execution through unsanitized browser UI

Unresolved

• Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions.
• Users running certain screen readers may experience performance issues and are advised to use Firefox ESR until performance issues are resolved in an upcoming future release.

Update:
To get the update now, select "Help" from the Firefox menu, then pick "About Firefox."  Mac users need to select "About Firefox" from the Firefox menu. If you do not use the English language version, Fully Localized Versions are available for download.

References

• Common questions after updating Firefox
• Security Updates
• Mozilla Firefox Release Notes
• Rapid Release Calendar

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