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[security bulletin] HPESBHF03730 rev.2 - HPE Aruba ClearPass Policy Manager, Multiple Vulnerabilities Jun 09 2017 07:09PM
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Note: the current version of the following document is available here:

https://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-hpesbhf
03730en_us

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: hpesbhf03730en_us

Version: 2

HPESBHF03730 rev.2 - HPE Aruba ClearPass Policy Manager, Multiple

Vulnerabilities

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

soon as possible.

Release Date: 2017-06-09

Last Updated: 2017-06-09

Potential Security Impact: Remote: Access Restriction Bypass, Arbitrary

Command Execution, Cross-Site Scripting (XSS), Disclosure of Information,

Escalation of Privilege

Source: Hewlett Packard Enterprise, Product Security Response Team

VULNERABILITY SUMMARY

Potential security vulnerabilities have been identified in HPE Aruba

ClearPass Policy Manager. The vulnerabilities could be remotely exploited to

allow access restriction bypass, arbitrary command execution, cross site

scripting (XSS), escalation of privilege and disclosure of information.

References:

- PSRT110521

- CVE-2017-5824 - unauthenticated remote Code Execution

- CVE-2017-5825 - privilege escalation

- CVE-2017-5826 - authenticated Remote Code Execution

- CVE-2017-5827 - reflected XSS

- CVE-2017-5828 - arbitrary command execution via Xml External entity (XXE)

- CVE-2017-5829 - access restriction bypass

- CVE-2017-5647 - Apache Tomcat, information disclosure

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

- Aruba ClearPass Enterprise Software - All ClearPass 6.6.x versions

without hotfix patch for CVE-2017-5647/CVE-2017-5824/CVE-2017-5829 applied

BACKGROUND

CVSS Base Metrics

=================

Reference, CVSS V3 Score/Vector, CVSS V2 Score/Vector

CVE-2017-5647

7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVE-2017-5824

8.1 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)

CVE-2017-5825

5.0 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

4.6 (AV:N/AC:H/Au:S/C:P/I:P/A:P)

CVE-2017-5826

5.0 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

4.6 (AV:N/AC:H/Au:S/C:P/I:P/A:P)

CVE-2017-5827

4.6 CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L

4.6 (AV:N/AC:H/Au:S/C:P/I:P/A:P)

CVE-2017-5828

4.2 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

3.6 (AV:N/AC:H/Au:S/C:P/I:P/A:N)

CVE-2017-5829

3.6 CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

2.6 (AV:L/AC:H/Au:N/C:P/I:P/A:N)

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-c013454
99

Hewlett Packard Enterprise would like to thank the following researchers for

reporting issues to security-alert (at) hpe (dot) com [email concealed]:

* Luke Young (@TheBoredEng) for reporting CVE-2017-5824 through the BugCrowd

managed bug bounty program.

* Luke Young (@TheBoredEng) for reporting CVE-2017-5825 through the BugCrowd

managed bug bounty program.

* "fmast" for reporting CVE-2017-5826 through the BugCrowd BugCrowd managed

bug bounty program.

* Phil Purviance (@superevr) of Bishop Fox for reporting CVE-2017-5827.

* V. Harishkumar (@harishkumar0394) for reporting CVE-2017-5828 through the

BugCrowd managed bug bounty program.

* Luke Young (@TheBoredEng) for reporting CVE-2017-5829 through the BugCrowd

managed bug bounty program.

RESOLUTION

HPE Aruba has provided the following resolution - Upgrade to ClearPass Policy

Manager version 6.6.5 and then apply an additional hotfix. ClearPass 6.6.5

was released on March 30, 2017 and an updated version was released April 12,

2017. The additional hotfix is applicable to both versions of ClearPass 6.6.5

and was released on May 24, 2017. All future releases of ClearPass will

include these fixes when released.

Installing the Patch Online Using the Software Updates Portal:

1. Open ClearPass Policy Manager and go to `Administration - Agents and

Software Updates - Software Updates`.

2. In the Firmware and Patch Updates area, find the "ClearPass Cumulative

Patch 5 for 6.6.0, 6.6.1, 6.6.2, 6.6.3 and 6.6.4" and click the Download

button in its row.

3. Click Install.

4. When the installation is complete and the status is shown as "Needs

Restart", proceed to restart ClearPass. After reboot, the status for the

patch will be shown as Installed in `Administration - Agents and Software

Updates - Software Updates page`.

5. While in the Firmware and Patch Updates area, find the "ClearPass 6.6.5

Hotfix Patch for CVE-2017-5647, CVE-2017-5824, and CVE-2017-5829" and click

the Download button in its row.

6. Click Install.

7. When the installation is complete and the status is shown as "Needs

Restart", proceed to restart ClearPass. After reboot, the status for the

patch will be shown as Installed. The ClearPass Policy Manager version number

will not change.

Installing the Patch Offline Using the Patch File from

<https://support.arubanetworks.com>:

1. Download the "6.6.0 Cumulative Patch 5 (6.6.5)" and "ClearPass 6.6.5

Hotfix Patch for CVE-2017-5647, CVE-2017-5824, and CVE-2017-5829" from the

Support site.

2. Open the ClearPass Policy Manager Admin UI and go to `Administration -

Agents and Software Updates - Software Updates`.

3. At the bottom of the Firmware and Patch Updates area, click Import Updates

and browse to the downloaded "6.6.0 Cumulative Patch 5 (6.6.5)" file.

4. Click Install.

5. When the installation is complete and the status is shown as Needs

Restart, proceed to restart ClearPass. After reboot, the status for the patch

will be shown as Installed in Administration - Agents and Software Updates -

Software Updates page.

6. At the bottom of the Firmware and Patch Updates area, click Import Updates

and browse to the downloaded " ClearPass 6.6.5 Hotfix Patch for

CVE-2017-5647, CVE-2017-5824, and CVE-2017-5829" file.

7. Click Install.

8. When the installation is complete and the status is shown as "Needs

Restart", proceed to restart ClearPass. After reboot, the status for the

patch will be shown as Installed. The ClearPass Policy Manager version number

will not change.

**Notes:**

* **Temporary Mitigation**: These attacks require network access to the

ClearPass administrative Web interface to execute. As a general best practice

it is recommended that all administrative access be restricted to trusted

user networks exclusively. This applies to the Policy Manager Admin Web

Interface and SSH consoles. This is best accomplished through a comprehensive

network security policy that restricts administrative access to ClearPass

administration interfaces.

* Restricting access to the Policy Manager Admin Web Interface can be

accomplished by navigating to `Administration - Server Manager - Server

Configuration - 'Server-Name' - Network - Restrict Access`and only allowing

non-public or network management networks.

**Note:** Please contact HPE Aruba Technical Support if any assistance is

needed.

HISTORY

Version:1 (rev.1) - 25 May 2017 Initial release

Version:2 (rev.2) - 9 June 2017 Updated affected version

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.

Support: For issues about implementing the recommendations of this Security

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

the content of this Security Bulletin, send e-mail to security-alert (at) hpe (dot) com. [email concealed]

Report: To report a potential security vulnerability for any HPE supported

product:

Web form: https://www.hpe.com/info/report-security-vulnerability

Email: security-alert (at) hpe (dot) com [email concealed]

Subscribe: To initiate a subscription to receive future HPE Security Bulletin

alerts via Email: http://www.hpe.com/support/Subscriber_Choice

Security Bulletin Archive: A list of recently released Security Bulletins is

available here: http://www.hpe.com/support/Security_Bulletin_Archive

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 = HPE General Software

HF = HPE Hardware and Firmware

MU = Multi-Platform Software

NS = NonStop Servers

OV = OpenVMS

PV = ProCurve

ST = Storage Software

UX = HP-UX

Copyright 2016 Hewlett Packard Enterprise

Hewlett Packard Enterprise 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 Enterprise and the names of Hewlett Packard Enterprise products

referenced herein are trademarks of Hewlett Packard Enterprise 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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