Security Advisory

CVE-2021-38502

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-11-03 00:02:49

Last updated 2024-08-04 01:44:22

Assigner mozilla

State PUBLISHED

Description

Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. A MITM could perform a downgrade attack to intercept transmitted messages, or could take control of the authenticated session to execute SMTP commands chosen by the MITM. If an unprotected authentication method was configured, the MITM could obtain the authentication credentials, too. This vulnerability affects Thunderbird < 91.2.

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