ISOMAN

CVE

CVE-2020-12398

If Thunderbird is configured to use STARTTLS for an IMAP server, and the server sends a PREAUTH response, then Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection. This vulnerability affects Thunderbird < 68.9.0.

Severity
HIGH
CVSS
7.5
Published
Modified

Linked Releases

References

  1. https://bugzilla.mozilla.org/show_bug.cgi?id=1613623
  2. https://usn.ubuntu.com/4421-1/
  3. https://www.mozilla.org/security/advisories/mfsa2020-22/
  4. https://bugzilla.mozilla.org/show_bug.cgi?id=1613623
  5. https://usn.ubuntu.com/4421-1/
  6. https://www.mozilla.org/security/advisories/mfsa2020-22/