Description
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content.
Solution(s)
mozilla-firefox-esr-upgrade-78_10
Referenceshttps://attackerkb.com/topics/cve-2021-23999 CVE - 2021-23999 http://www.mozilla.org/security/announce/2021/mfsa2021-15.html