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Bug 1337460

Summary:	Disable/remove export ciphersuites in GnuTLS
Product:	Red Hat Enterprise Linux 6	Reporter:	Nikos Mavrogiannopoulos <nmavrogi>
Component:	gnutls	Assignee:	Nikos Mavrogiannopoulos <nmavrogi>
Status:	CLOSED ERRATA	QA Contact:	Alicja Kario <hkario>
Severity:	unspecified	Docs Contact:	Mirek Jahoda <mjahoda>
Priority:	unspecified
Version:	6.9	CC:	hkario, nmavrogi, salmy, szidek
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	gnutls-2.12.23-16.el6	Doc Type:	Deprecated Functionality
Doc Text:	The EXPORT cipher suites in GnuTLS are deprecated This change removes support for the EXPORT cipher suites in the GNU Transport Layer Security (GnuTLS) 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. The GnuTLS EXPORT cipher suite priority string remains, but as an alias for the NORMAL priority string.	Story Points:	---
Clone Of:
Clones:	1337461 (view as bug list)		Environment:
Last Closed:	2017-03-21 09:04:12 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:	1335911, 1343211

Description Nikos Mavrogiannopoulos 2016-05-19 09:20:10 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 22 errata-xmlrpc 2017-03-21 09:04:12 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://rhn.redhat.com/errata/RHSA-2017-0574.html