[security bulletin] HPESB3P03762 rev.1 - HPE C Switch Software using Cisco Prime Data Center Network Manager (DCNM), Remote Code Execution

Note: the current version of the following document is available here:
https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesb3p03762en_us

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: hpesb3p03762en_us
Version: 1

HPESB3P03762 rev.1 - HPE C Switch Software using Cisco Prime Data Center
Network Manager (DCNM), Remote Code Execution

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

Release Date: 2017-08-10
Last Updated: 2017-08-10

Potential Security Impact: Remote: Code Execution

Source: Hewlett Packard Enterprise, Product Security Response Team

VULNERABILITY SUMMARY
HPE StoreFabric C-series Switch Software uses Ciscos Prime Data Center
Network Manager (DCNM). Cisco has identified a remote code execution
vulnerability in two versions of Cisco Prime Data Center Network Manager
(DCNM) which HPE had included for download for customers under contract from
the HPE Support Center. The affected versions of DCNM are 10.1(1) and
10.1(2). HPE bundled these DCNM versions with the following MDS and Nexus
firmware downloads:

 * MDS 7.3(0)DY(1), released February 2017
 * MDS 7.3(1)DY(1), released April 2017
 * Nexus 5.2(1)N1(9b), released May 2017

**Note:** A vulnerability in the role-based access control (RBAC)
functionality of Cisco Prime Data Center Network Manager (DCNM) could allow
an unauthenticated, remote attacker to access sensitive information or
execute arbitrary code with root privileges on an affected system. The
vulnerability is due to the lack of authentication and authorization
mechanisms for a debugging tool that was inadvertently enabled in the
affected software. An attacker could exploit this vulnerability by remotely
connecting to the debugging tool via TCP. A successful exploit could allow
the attacker to access sensitive information about the affected software or
execute arbitrary code with root privileges on the affected system.

References:

  - CVE-2017-6639

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

  - HP C-series Switch Software Data Center Network Manager Version 10.1(1),
10.1(2)

BACKGROUND

  CVSS Base Metrics
  =================
  Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector

    CVE-2017-6639
      10.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
      10.0 (AV:N/AC:L/Au:N/C:C/I:C/A:C)

    Information on CVSS is documented in
    HPE Customer Notice HPSN-2008-002 here:

https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c01345499

RESOLUTION

There are no workarounds that address this vulnerability. Cisco has released
software updates that address this vulnerability with DCNM 10.2(1). HPE has
made the updates available to customers under contract through HPE Support
Center:

 * <http://www.hpe.com/support/hpesc>

**It is essential that all HPE customers who had previously downloaded any of
the firmware and DCNM packages above download again with the updated packages
from the HPE Support Center.** All packages have been updated to include DCNM
10.2(1), and they are listed here:

 * MDS 7.3(0)DY(1), released June 2017
 * MDS 7.3(1)DY(1), released June 2017
 * Nexus 5.2(1)N1(9b), released June 2017

HISTORY
Version:1 (rev.1) - 11 August 2017 Initial release

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

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Bulletin, contact normal HPE Services support channel. For other issues about
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