Security update for MozillaFirefox (important)

An update that fixes 8 vulnerabilities is now available.

Description:

This update for MozillaFirefox fixes the following issues:

MozillaFirefox was updated to Extended Support Release 91.3.0 ESR

• Fixed: Various stability, functionality, and security fixes

MFSA 2021-49 (bsc#1192250)

 * CVE-2021-38503: iframe sandbox rules did not apply to XSLT stylesheets
 * CVE-2021-38504: Use-after-free in file picker dialog
 * CVE-2021-38505: Windows 10 Cloud Clipboard may have recorded sensitive
   user data
 * CVE-2021-38506: Firefox could be coaxed into going into fullscreen
   mode without notification or warning
 * CVE-2021-38507: Opportunistic Encryption in HTTP2 could be used to
   bypass the Same-Origin-Policy on services hosted on other ports
 * CVE-2021-38508: Permission Prompt could be overlaid, resulting in user
   confusion and potential spoofing
 * CVE-2021-38509: Javascript alert box could have been spoofed onto an
   arbitrary domain
 * CVE-2021-38510: Download Protections were bypassed by .inetloc files
   on Mac OS
 * MOZ-2021-0008: Use-after-free in HTTP2 Session object
 * MOZ-2021-0007: Memory safety bugs fixed in Firefox 94 and Firefox ESR
   91.3

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

• openSUSE Leap 15.3:

  zypper in -t patch openSUSE-SLE-15.3-2021-3745=1