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Security Advisory - Samba Remote Code Execution Vulnerability in Some Huawei Products

  • SA No:huawei-sa-20171129-01-samba
  • Initial Release Date:2017-11-29
  • Last Release Date:2017-11-29

All versions of Samba from 3.5.0 onwards are vulnerable to a remote code execution vulnerability, allowing an authenticated attacker to upload a shared library to a writable share and execute arbitrary code remotely on a targeted system. Samba 4.6.4, 4.5.10 and 4.4.14 have been issued as security releases to correct the defect. (Vulnerability ID: HWPSIRT-2017-05176)
This vulnerability has been assigned a CVE ID: CVE-2017-7494.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-samba-en

Product Name

Affected Version

Resolved Product and Version

OceanStor VTL6900

V100R005C10

V100R001C10SPC200
Successful exploitation of the vulnerability allows attackers to execute arbitrary code on Samba servers.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 7.5 (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Temporal Score: 7.0 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker has the write privilege on the Samba shared directory.
Vulnerability details:
All versions of Samba from 3.5.0 onwards are vulnerable to a remote code execution vulnerability, allowing an authenticated attacker to upload a shared library to a writable share and execute arbitrary code remotely on a targeted system.
OceanStor VTL6900:
Users can add the parameter:
nt pipe support = no
to the [global] section of your smb.conf and restart smbd. This prevents clients from accessing any named pipe endpoints.


Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability is disclosed by samba.org.
2017-11-29 V1.0 INITIAL

None

Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.