Bug 1752307 (CVE-2019-11739)

Summary:	CVE-2019-11739 Mozilla: Covert Content Attack on S/MIME encryption using a crafted multipart/alternative message
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
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 60.9	Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-09-16 18:45:37 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:	1749598, 1749599, 1749601
Bug Blocks:	1749596

Description Doran Moppert 2019-09-15 23:56:10 UTC

Encrypted S/MIME parts in a crafted multipart/alternative message can leak plaintext when included in a a HTML reply/forward.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2019-29/#CVE-2019-11739

Comment 1 Doran Moppert 2019-09-15 23:56:13 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Jens Müller, Marcus Brinkmann, Damian Poddebniak, Sebastian Schinzel, Jörg Schwenk

Comment 2 Doran Moppert 2019-09-16 08:31:22 UTC

Statement:

In general, this flaw cannot be exploited through email in Thunderbird because scripting is disabled when reading mail, but it may present a risk in browser-like contexts.

Comment 3 errata-xmlrpc 2019-09-16 14:22:27 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:2774 https://access.redhat.com/errata/RHSA-2019:2774

Comment 4 Product Security DevOps Team 2019-09-16 18:45:37 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-2019-11739

Comment 5 errata-xmlrpc 2019-09-19 03:39:06 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2773 https://access.redhat.com/errata/RHSA-2019:2773

Comment 6 errata-xmlrpc 2019-09-19 06:25:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:2807 https://access.redhat.com/errata/RHSA-2019:2807