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Category:   Application (Generic)  >   Node.js Vendors:   Joyent, Inc.
(Red Hat Issues Fix for Node.js) OpenSSL SSL 3.0 Protocol Downgrade Flaw Lets Remote Users Decrypt SSL Traffic
SecurityTracker Alert ID:  1033182
SecurityTracker URL:
CVE Reference:   CVE-2014-3566   (Links to External Site)
Date:  Aug 5 2015
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in OpenSSL. A remote user can decrypt SSL sessions in certain cases. Node.js on Red Hat Enterprise Linux is affected.

A remote user can with the ability to conduct a man-in-the-middle attack can force a client to negotiate a downgrade to SSLv3 instead of a TLS v1.x protocol and then conduct a BEAST-style of attack to decrypt portions of the session.

This protocol vulnerability is referred to as the POODLE ("Padding Oracle On Downgraded Legacy Encryption") vulnerability.

This is a flaw in the protocol rather than in the OpenSSL implementation.

The original advisory is available at:

Bodo Moller, Thai Duong, and Krzysztof Kotowicz reported this vulnerability.

Impact:   A remote user with the ability to conduct a man-in-the-middle attack can decrypt SSL sessions.
Solution:   Red Hat has issued a fix for Node.js.

The Red Hat advisories are available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
Oct 15 2014 OpenSSL SSL 3.0 Protocol Downgrade Flaw Lets Remote Users Decrypt SSL Traffic

 Source Message Contents

Subject:  [RHSA-2015:1545-01] Important: node.js security update

Hash: SHA1

                   Red Hat Security Advisory

Synopsis:          Important: node.js security update
Advisory ID:       RHSA-2015:1545-01
Product:           Red Hat OpenShift Enterprise
Advisory URL:
Issue date:        2015-08-04
CVE Names:         CVE-2014-3566 

1. Summary:

Updated node.js packages that fix one security issue are now available for
Red Hat OpenShift Enterprise 2.1.

Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

RHOSE Node 2.1 - noarch

3. Description:

OpenShift Enterprise by Red Hat is the company's cloud computing
Platform-as-a-Service (PaaS) solution designed for on-premise or private
cloud deployments.

Node.js is a software development platform for building fast and scalable
network applications in the JavaScript programming language.

A flaw was found in the way SSL 3.0 handled padding bytes when decrypting
messages encrypted using block ciphers in cipher block chaining (CBC) mode.
This flaw allows a man-in-the-middle (MITM) attacker to decrypt a selected
byte of a cipher text in as few as 256 tries if they are able to force a
victim application to repeatedly send the same data over newly created SSL
3.0 connections. (CVE-2014-3566)

All OpenShift Enterprise users are advised to upgrade to these updated
packages, which correct this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

5. Bugs fixed (

1152789 - CVE-2014-3566 SSL/TLS: Padding Oracle On Downgraded Legacy Encryption attack

6. Package List:

RHOSE Node 2.1:



These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from

7. References:

8. Contact:

The Red Hat security contact is <>. More contact
details at

Copyright 2015 Red Hat, Inc.
Version: GnuPG v1


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