CVE-2021-38502

MEDIUM Year: 2021
CVSS v3 Score
5.9
Medium
CVSS v2 Score
4.3
Medium
Weakness Type
NVD-CWE-Other
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Vulnerability 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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