VulnerabilityModified
CVE-2020-12398
This vulnerability affects Thunderbird < 68.9.0.
HIGH 7.5EPSS 0.98%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.98% probability · 60th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-319
- Affected
- mozilla/thunderbird · canonical/ubuntu linux
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1613623Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1613623Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.