vulnerability

Ubuntu: (Multiple Advisories) (CVE-2021-38502): Thunderbird vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Oct 15, 2021
Added
Jan 22, 2022
Modified
Nov 7, 2024

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.

Solution

ubuntu-upgrade-thunderbird

References

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