medium5.9
CVE-2021-38502
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Thunderbird | before 91.2 |
| Debian | Debian Linux | Versions 9.0, 10.0, 11.0 |
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=1733366
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://www.debian.org/security/2022/dsa-5034
- https://www.mozilla.org/security/advisories/mfsa2021-47/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1733366
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://www.debian.org/security/2022/dsa-5034
- https://www.mozilla.org/security/advisories/mfsa2021-47/