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Bug 1335943

Summary:	Disable/remove export ciphersuites in NSS
Product:	Red Hat Enterprise Linux 7	Reporter:	Nikos Mavrogiannopoulos <nmavrogi>
Component:	nss	Assignee:	Daiki Ueno <dueno>
Status:	CLOSED ERRATA	QA Contact:	Alicja Kario <hkario>
Severity:	unspecified	Docs Contact:	Mirek Jahoda <mjahoda>
Priority:	unspecified
Version:	7.4	CC:	hkario, kengert, mgrepl, rrelyea, szidek
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	nss-3.28.3-4.el7	Doc Type:	Deprecated Functionality
Doc Text:	The EXPORT cipher suites in NSS are deprecated This change removes support for the EXPORT cipher suites in the Network Security Services (NSS) library. Disabling the weak cipher suites prevents attacks such as the FREAK attack. The EXPORT cipher suites are not required in any TLS protocol configuration.	Story Points:	---
Clone Of:
Clones:	1335944 (view as bug list)		Environment:
Last Closed:	2017-08-01 16:47:42 UTC	Type:	Bug
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:
Bug Blocks:	1335929, 1377248

Description Nikos Mavrogiannopoulos 2016-05-13 15:10:41 UTC

RHEL includes several cryptographic components who's security doesn't remain constant over time. Algorithms such as (cryptographic) hashing and encryption typically have a lifetime after which they are considered either too risky to use or plain insecure. That would mean we need to phase out such algorithms from the default settings, or completely disable if they could cause irreparable issue. 

This bug is about disabling by default and removing the ability to negotiate the marked as EXPORT ciphersuites. It should not be possible by applications to inadvertently enable them.

Comment 1 Bob Relyea 2016-05-17 00:24:37 UTC

I think they are already disabled in RHEL-7, but it doesn't hurt to verify that.

bob

Comment 5 errata-xmlrpc 2017-08-01 16:47:42 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2017:1977