Bug 1119800 - ECC supported curves list extension is missing in DTLS1 client hello
Summary: ECC supported curves list extension is missing in DTLS1 client hello
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: openssl
Version: 6.5
Hardware: Unspecified
OS: Unspecified
Target Milestone: rc
: ---
Assignee: Tomas Mraz
QA Contact: Hubert Kario
Depends On:
TreeView+ depends on / blocked
Reported: 2014-07-15 14:37 UTC by Tomas Mraz
Modified: 2014-10-14 07:20 UTC (History)
3 users (show)

Fixed In Version: openssl-1.0.1e-30.el6
Doc Type: Bug Fix
Doc Text:
The TLS extensions that were sent in the Datagram TLS (DTLS) ClientHello requests did previously not contain the list of the supported elliptic curves. As a consequence, the DTLS connections to servers using elliptic curves not supported by the OpenSSL client were aborted. With this update, the elliptic curve list extension is properly sent in the DTLS ClientHello requests, and DTLS connections are no longer aborted in the above circumstances.
Clone Of:
: 1119803 1153331 (view as bug list)
Last Closed: 2014-10-14 07:20:26 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2014:1525 0 normal SHIPPED_LIVE openssl bug fix and enhancement update 2014-10-14 01:22:05 UTC

Description Tomas Mraz 2014-07-15 14:37:41 UTC
ECC supported curves list extension is missing in DTLS1 client hello message. Because we do not support all of the ECC curves that are currently widely used this severally worsens the interoperability of DTLS1 protocol in our openssl package.

Upstream recently fixed this issue.

Comment 10 errata-xmlrpc 2014-10-14 07:20:26 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.


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