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Red Hat: CVE-2021-38502: CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections (Multiple Advisories)

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Red Hat: CVE-2021-38502: CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
10/13/2021
Created
10/28/2021
Added
10/18/2021
Modified
12/15/2023

Description

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.

Solution(s)

  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • DSA-5034
  • CVE-2021-38502
  • RHSA-2021:3838
  • RHSA-2021:3839
  • RHSA-2021:3840
  • RHSA-2021:3841

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