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Category:   Application (Generic)  >   HPE Release Control Vendors:   HPE
HP Release Control TLS Diffie-Hellman Export Cipher Downgrade Attack Lets Remote Users Decrypt Connections
SecurityTracker Alert ID:  1032864
SecurityTracker URL:  http://securitytracker.com/id/1032864
CVE Reference:   CVE-2015-4000   (Links to External Site)
Date:  Jul 11 2015
Impact:   Modification of authentication information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9.13, 9.20, 9.21, 9.21P1, and 9.21P2
Description:   A vulnerability was reported in HP Release Control. A remote user may be able to decrypt TLS connections in certain situations.

A remote user that can conduct a man-in-the-middle attack can cause the target system to downgrade the Diffie-Hellman algorithm to 512-bit export-grade cryptography. The remote user may then be able to decrypt the connection.

This vulnerability resides in the TLS protocol and not in the specific TLS implementation, but the vulnerability is exposed because the target system supports export-grade ciphers.

This attack is known as the "Logjam" attack.

The original advisory is available at:

https://weakdh.org/imperfect-forward-secrecy.pdf

David Adrian, Karthikeyan Bhargavan, Zakir Durumeric, Pierrick Gaudry, Matthew Green, J. Alex Halderman, Nadia Heninger, Drew Springall, Emmanuel Thome, Luke Valenta, Benjamin VanderSloot, Eric Wustrow, Santiago Zanella-Beguelin, and Paul Zimmermann reported this vulnerability.

Impact:   A remote user that can conduct a man-in-the-middle attack can cause the target system to use weak cryptography that can be decrypted.
Solution:   The vendor has described steps to resolve this vulnerability.

The vendor's advisory is available at:

https://h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04740527

Vendor URL:  h20564.www2.hp.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04740527 (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  [security bulletin] HPSBGN03373 rev.1 - HP Release Control running TLS, Remote Disclosure of Information

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Note: the current version of the following document is available here:
https://h20564.www2.hp.com/portal/site/hpsc/public/kb/
docDisplay?docId=emr_na-c04740527

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: c04740527
Version: 1

HPSBGN03373 rev.1 - HP Release Control running TLS, Remote Disclosure of
Information

NOTICE: The information in this Security Bulletin should be acted upon as
soon as possible.

Release Date: 2015-07-10
Last Updated: 2015-07-10

Potential Security Impact: Remote disclosure of information

Source: Hewlett-Packard Company, HP Software Security Response Team

VULNERABILITY SUMMARY
A potential security vulnerability has been identified with HP Release
Control running TLS.

This is the TLS vulnerability using US export-grade 512-bit keys in
Diffie-Hellman key exchange known as "Logjam" which could be exploited
remotely resulting in disclosure of information.

References: CVE-2015-4000 (SSRT102132)

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP Release Control v9.13, v9.20, v9.21, v9.21P1, and v9.21P2

BACKGROUND

CVSS 2.0 Base Metrics
===========================================================
  Reference              Base Vector             Base Score
CVE-2015-4000    (AV:N/AC:M/Au:N/C:N/I:P/A:N)       4.3
===========================================================
             Information on CVSS is documented
            in HP Customer Notice: HPSN-2008-002

RESOLUTION

HP has provided information at the following location to resolve the
vulnerability in HP Release Control:

https://softwaresupport.hp.com/group/softwaresupport/search-result/-/facetsea
rch/document/KM01708694

HISTORY
Version:1 (rev.1) - 10 July 2015 Initial release

Third Party Security Patches: Third party security patches that are to be
installed on systems running HP software products should be applied in
accordance with the customer's patch management policy.

Support: For issues about implementing the recommendations of this Security
Bulletin, contact normal HP Services support channel.  For other issues about
the content of this Security Bulletin, send e-mail to security-alert@hp.com.

Report: To report a potential security vulnerability with any HP supported
product, send Email to: security-alert@hp.com

Subscribe: To initiate a subscription to receive future HP Security Bulletin
alerts via Email:
http://h41183.www4.hp.com/signup_alerts.php?jumpid=hpsc_secbulletins

Security Bulletin Archive: A list of recently released Security Bulletins is
available here:
https://h20564.www2.hp.com/portal/site/hpsc/public/kb/secBullArchive/

Software Product Category: The Software Product Category is represented in
the title by the two characters following HPSB.

3C = 3COM
3P = 3rd Party Software
GN = HP General Software
HF = HP Hardware and Firmware
MP = MPE/iX
MU = Multi-Platform Software
NS = NonStop Servers
OV = OpenVMS
PI = Printing and Imaging
PV = ProCurve
ST = Storage Software
TU = Tru64 UNIX
UX = HP-UX

Copyright 2015 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or editorial errors
or omissions contained herein. The information provided is provided "as is"
without warranty of any kind. To the extent permitted by law, neither HP or
its affiliates, subcontractors or suppliers will be liable for
incidental,special or consequential damages including downtime cost; lost
profits; damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration. The
information in this document is subject to change without notice.
Hewlett-Packard Company and the names of Hewlett-Packard products referenced
herein are trademarks of Hewlett-Packard Company in the United States and
other countries. Other product and company names mentioned herein may be
trademarks of their respective owners.

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