Bug 2013469 (CVE-2021-38502) - CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections
Summary: CVE-2021-38502 Mozilla: Downgrade attack on SMTP STARTTLS connections
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-38502
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2010723 2010724 2010725 2010727 2010728 2010729 2010730 2010731
Blocks: 2010721
TreeView+ depends on / blocked
 
Reported: 2021-10-12 23:19 UTC by Doran Moppert
Modified: 2021-10-13 14:08 UTC (History)
5 users (show)

Fixed In Version: thunderbird 91.2
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2021-10-13 14:08:25 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:3838 0 None None None 2021-10-13 09:31:22 UTC
Red Hat Product Errata RHSA-2021:3839 0 None None None 2021-10-13 09:26:53 UTC
Red Hat Product Errata RHSA-2021:3840 0 None None None 2021-10-13 09:25:58 UTC
Red Hat Product Errata RHSA-2021:3841 0 None None None 2021-10-13 09:57:38 UTC

Description Doran Moppert 2021-10-12 23:19:33 UTC 
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.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-47/#CVE-2021-38502
Comment 1 errata-xmlrpc 2021-10-13 09:25:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2021:3840 https://access.redhat.com/errata/RHSA-2021:3840
Comment 2 errata-xmlrpc 2021-10-13 09:26:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2021:3839 https://access.redhat.com/errata/RHSA-2021:3839
Comment 3 errata-xmlrpc 2021-10-13 09:31:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:3838 https://access.redhat.com/errata/RHSA-2021:3838
Comment 4 errata-xmlrpc 2021-10-13 09:57:37 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:3841 https://access.redhat.com/errata/RHSA-2021:3841
Comment 5 Product Security DevOps Team 2021-10-13 14:08:25 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-38502
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