Mageia 7, 8 - MGASA-2021-0198 Moderate: Thunderbird Network Threat

More internal network hosts could have been probed by a malicious webpage: Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine (CVE-2021-23961).
Out of bound write due to lazy initialization: A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write (CVE-2021-23994).
Use-after-free in Responsive Design Mode: When Responsive Design Mode was enabled, it used references to objects that were previously freed. We presume that with enough effort this could have been exploited to run arbitrary code (CVE-2021-23995).
Secure Lock icon could have been spoofed: Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon from an HTTPS page (CVE-2021-23998).
Blob URLs may have been granted additional privileges: If a Blob URL was loaded through some unusual...