Bug 1337460 – Disable/remove export ciphersuites in GnuTLS

Bugzilla will be upgraded to version 5.0. The upgrade date is tentatively scheduled for 2 December 2018, pending final testing and feedback.

Bug 1337460 - Disable/remove export ciphersuites in GnuTLS

Summary:	Disable/remove export ciphersuites in GnuTLS

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	gnutls (Show other bugs)
Sub Component:
Version:	6.9
Hardware:	Unspecified Unspecified

Priority	unspecified Severity unspecified
Target Milestone:	rc
Target Release:	---
Assigned To:	Nikos Mavrogiannopoulos
QA Contact:	Hubert Kario
Docs Contact:	Mirek Jahoda

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	1343211 1335911
	Show dependency tree / graph

Reported:	2016-05-19 05:20 EDT by Nikos Mavrogiannopoulos
Modified:	2017-03-21 05:04 EDT (History)
CC List:	4 users (show)

See Also:
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 05:04:12 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:0574	normal	SHIPPED_LIVE	Moderate: gnutls security, bug fix, and enhancement update	2017-03-21 08:23:04 EDT

Groups: None (edit)

Description Nikos Mavrogiannopoulos 2016-05-19 05:20:10 EDT

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 05:04:12 EDT

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

Note You need to log in before you can comment on or make changes to this bug.