CVE Details

Release Date:2021-11-03


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.

See more information about CVE-2021-38502 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 5.9 Base Metrics: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Access Vector: Network Attack Complexity: High
Privileges Required: None User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: None Availability Impact: None

Errata information

PlatformErrataRelease Date
Oracle Linux version 7 (thunderbird)ELSA-2021-38412021-10-25
Oracle Linux version 8 (thunderbird)ELSA-2021-38382021-10-15

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team