CVE-2020-12398

HIGH7.5

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

Published Jul 9, 2020

Modified 1 years ago

No fix available

Details

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.

References

WEBhttps://bugzilla.mozilla.org/show_bug.cgi?id=1613623 ADVISORYhttps://usn.ubuntu.com/4421-1/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2020-12398 WEBhttps://www.mozilla.org/security/advisories/mfsa2020-22/

CVSS Analysis

CVSS v3.1

7.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

NoneA:N

7.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Ecosystems

Timeline

PublishedJul 9, 2020

ModifiedAug 4, 2024