Update for MozillaFirefox.openSUSE_Leap_15.2_Update security critical

Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues:

- Firefox Extended Support Release 78.6.0 ESR
* Fixed: Various stability, functionality, and security fixes
MFSA 2020-55 (bsc#1180039)
* CVE-2020-16042 (bmo#1679003)
Operations on a BigInt could have caused uninitialized memory
to be exposed
* CVE-2020-26971 (bmo#1663466)
Heap buffer overflow in WebGL
* CVE-2020-26973 (bmo#1680084)
CSS Sanitizer performed incorrect sanitization
* CVE-2020-26974 (bmo#1681022)
Incorrect cast of StyleGenericFlexBasis resulted in a heap
use-after-free
* CVE-2020-26978 (bmo#1677047)
Internal network hosts could have been probed by a malicious
webpage
* CVE-2020-35111 (bmo#1657916)
The proxy.onRequest API did not catch view-source URLs
* CVE-2020-35112 (bmo#1661365)
Opening an extension-less download may have inadvertently
launched an executable instead
* CVE-2020-35113 (bmo#1664831, bmo#1673589)
Memory safety bugs fixed in Firefox 84 and Firefox ESR 78.6

This update was imported from the SUSE:SLE-15:Update update project.

Fixed bugs
Selected Binaries
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