If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2020-26/#CVE-2020-15646
Acknowledgments: Name: the Mozilla project Upstream: Magnus Melin
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-15646