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[security bulletin] HPESBNS03755 rev.1 - HPE NonStop Server using Samba, Multiple Remote Vulnerabilities



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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-hpesbns03755en_us

SUPPORT COMMUNICATION - SECURITY BULLETIN

Document ID: hpesbns03755en_us
Version: 1

HPESBNS03755 rev.1 - HPE NonStop Server using Samba, Multiple Remote Vulnerabilities

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

Release Date: 2017-06-07
Last Updated: 2017-06-07

Potential Security Impact: Remote: Access Restriction Bypass, Arbitrary Code Execution

Source: Hewlett Packard Enterprise, Product Security Response Team

VULNERABILITY SUMMARY
HPE NonStop Server using Samba is vulnerable to remote code execution and remote access restriction bypass.

References:

  - CVE-2017-7494 - Remote Code Execution
  - CVE-2017-2619 - Remote Access Restriction Bypass

SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.

  - Samba on NonStop T1201L01 through T1201L01^AAL, T1201H01 through T1201H01^AAM

BACKGROUND

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

    CVE-2017-2619
      5.9 CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:L
      5.2 (AV:L/AC:H/Au:N/C:C/I:P/A:P)

    CVE-2017-7494
      7.5 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
      7.2 (AV:L/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 patches available at this time for these vulnerabilities.
Hewlett Packard Enterprise will provide fixes in Samba SPRs T1201L01^AAO and T1201H01^AAN.

Customers can apply the following workarounds for each vulnerability in
Samba:

Workaround for CVE-2017-7494:

  + Add the parameter: `nt pipe support = no` to the smb.conf [global] section
  + Restart the Samba daemon (smbd).  
  
Workaround for CVE-2017-2619:

  + Add the parameter: `unix extensions = no` to the smb.conf [global] section
  + Restart the Samba daemon (smbd).  

See NonStop Hotstuff HS03357 for additional information. 


 **Note**: For further assistance please contact NonStop technical support.

HISTORY
Version:1 (rev.1) - 8 June 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.

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@xxxxxxx.

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@xxxxxxx

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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