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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Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
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History
Wed, 16 Jul 2025 13:45:00 +0000
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Status: PUBLISHED
Assigner: mozilla
Published:
Updated: 2024-08-04T01:44:22.910Z
Reserved: 2021-08-10T00:00:00
Link: CVE-2021-38502

No data.

Status : Modified
Published: 2021-11-03T01:15:07.657
Modified: 2024-11-21T06:17:15.620
Link: CVE-2021-38502


No data.