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Bug 1202494 - ECDHE key exchange not enabled by NSS_SetDomesticPolicy()
Summary: ECDHE key exchange not enabled by NSS_SetDomesticPolicy()
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: nss
Version: 7.0
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Elio Maldonado Batiz
QA Contact: Stanislav Zidek
Bara Ancincova
URL:
Whiteboard:
Depends On:
Blocks: 1057566 1205796 1246125
TreeView+ depends on / blocked
 
Reported: 2015-03-16 18:23 UTC by Stanislav Zidek
Modified: 2019-09-12 08:18 UTC (History)
12 users (show)

Fixed In Version: nss-3.19.1-14.el7
Doc Type: Bug Fix
Doc Text:
Applications that use the default NSS cipher list now support connections to servers that require the Elliptic Curve Diffie-Hellman Ephemeral (ECDHE) key exchange.
Clone Of:
Environment:
Last Closed: 2015-11-19 12:26:29 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1185708 0 unspecified CLOSED NSS does not enable ECC cipher-suites by default 2021-02-22 00:41:40 UTC
Red Hat Bugzilla 1245279 0 medium CLOSED OpenLDAP doesn't use sane (or default) cipher order 2021-02-22 00:41:40 UTC
Red Hat Product Errata RHBA-2015:2121 0 normal SHIPPED_LIVE nss bug fix and enhancement update 2015-11-19 11:01:16 UTC

Internal Links: 1185708 1245279

Description Stanislav Zidek 2015-03-16 18:23:19 UTC 
Description of problem:
cURL does not support ECDHE-* cipher suites

Version-Release number of selected component (if applicable):
curl-7.29.0-19.el7

How reproducible:
always

Steps to Reproduce:
1. try to connect somewhere with curl using SSL/TLS
2. observe ciphers it offers (ssltap, wireshark, ...)

Actual results:
WITHOUT --tls1:
                cipher_suites[17] = {
                    (0x009e) TLS/DHE-RSA/AES128-GCM/SHA256
                    (0x0033) TLS/DHE-RSA/AES128-CBC/SHA
                    (0x0032) TLS/DHE-DSS/AES128-CBC/SHA
                    (0x0067) TLS/DHE-RSA/AES128-CBC/SHA256
                    (0x0039) TLS/DHE-RSA/AES256-CBC/SHA
                    (0x0038) TLS/DHE-DSS/AES256-CBC/SHA
                    (0x006b) TLS/DHE-RSA/AES256-CBC/SHA256
                    (0x0016) SSL3/DHE-RSA/3DES192EDE-CBC/SHA
                    (0x0013) SSL3/DHE-DSS/DES192EDE3CBC/SHA
                    (0x009c) TLS/RSA/AES128-GCM/SHA256
                    (0x002f) TLS/RSA/AES128-CBC/SHA
                    (0x003c) TLS/RSA/AES128-CBC/SHA256
                    (0x0035) TLS/RSA/AES256-CBC/SHA
                    (0x003d) TLS/RSA/AES256-CBC/SHA256
                    (0x000a) SSL3/RSA/3DES192EDE-CBC/SHA
                    (0x0005) SSL3/RSA/RC4-128/SHA
                    (0x0004) SSL3/RSA/RC4-128/MD5
                }

WITH --tls1:
                cipher_suites[11] = {
                    (0x0033) TLS/DHE-RSA/AES128-CBC/SHA
                    (0x0032) TLS/DHE-DSS/AES128-CBC/SHA
                    (0x0039) TLS/DHE-RSA/AES256-CBC/SHA
                    (0x0038) TLS/DHE-DSS/AES256-CBC/SHA
                    (0x0016) SSL3/DHE-RSA/3DES192EDE-CBC/SHA
                    (0x0013) SSL3/DHE-DSS/DES192EDE3CBC/SHA
                    (0x002f) TLS/RSA/AES128-CBC/SHA
                    (0x0035) TLS/RSA/AES256-CBC/SHA
                    (0x000a) SSL3/RSA/3DES192EDE-CBC/SHA
                    (0x0005) SSL3/RSA/RC4-128/SHA
                    (0x0004) SSL3/RSA/RC4-128/MD5
                }


Expected results:
also ECDHE-* cipher suites are offered
Comment 1 Stanislav Zidek 2015-03-16 18:30:45 UTC 
The lists are switched and there is a typo in option, my bad, sorry; the longer one is with --tlsv1 option.
Comment 2 Kamil Dudka 2015-03-19 12:27:46 UTC 
libcurl calls NSS_SetDomesticPolicy() to enable default cipher-suites.  If this bug is about cipher-suites enabled by default, it needs to be fixed in NSS.  For explicit control over the enabled cipher-suites in libcurl, there already is bug 1066065 pending for approval.
Comment 16 errata-xmlrpc 2015-11-19 12:26:29 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/RHBA-2015-2121.html
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