Bug 1846556 (CVE-2020-12398)

Summary:	CVE-2020-12398 Mozilla: Security downgrade with IMAP STARTTLS leads to information leakage
Product:	[Other] Security Response	Reporter:	msiddiqu
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	thunderbird 68.9.0	Doc Type:	If docs needed, set a value
Doc Text:	The Mozilla Foundation Security Advisory describes this flaw as: 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.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-06-19 05:20:38 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1840095, 1840096, 1840097, 1840098, 1840099, 1840100, 1840101
Bug Blocks:	1840093

Description msiddiqu 2020-06-11 22:09:40 UTC

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.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-22/#CVE-2020-12398

Comment 1 msiddiqu 2020-06-11 22:09:45 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Damian Poddebniak

Comment 2 errata-xmlrpc 2020-06-19 01:53:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:2616 https://access.redhat.com/errata/RHSA-2020:2616

Comment 3 errata-xmlrpc 2020-06-19 01:54:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:2611 https://access.redhat.com/errata/RHSA-2020:2611

Comment 4 errata-xmlrpc 2020-06-19 03:07:57 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:2613 https://access.redhat.com/errata/RHSA-2020:2613

Comment 5 errata-xmlrpc 2020-06-19 03:18:12 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:2614 https://access.redhat.com/errata/RHSA-2020:2614

Comment 6 Product Security DevOps Team 2020-06-19 05:20:38 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-2020-12398

Comment 7 errata-xmlrpc 2020-06-22 09:37:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:2615 https://access.redhat.com/errata/RHSA-2020:2615