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Security Advisory - Buffer Overflow Vulnerability in Some Huawei Products

  • SA No:huawei-sa-20161116-01-cfm
  • Initial Release Date: Nov 16, 2016
  • Last Release Date: Nov 16, 2016

There is a buffer overflow vulnerability in Connectivity Fault Management (CFM) function of some Huawei Products. When CFM is enabled and Maintenance Association End Point (MEP) is configured on the affected device, an adjacent attacker could exploit this vulnerability by sending crafted packets to the affected system. An exploit could allow the attacker to cause the main control board of the affected device reboot. (Vulnerability ID: HWPSIRT-2016-08015)

This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2016-8790.

Huawei has released software updates to fix these vulnerabilities. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20161116-01-cfm-en

Product Name

Affected Version

Resolved Product and Version

CloudEngine 5800

V100R003C10

Upgrade to V200R001C00SPC700

V100R005C00

V100R005C10

V100R006C00

CloudEngine 6800

V100R003C10

Upgrade to V200R001C00SPC700

V100R005C00

V100R005C10

V100R006C00

CloudEngine 7800

V100R003C10

Upgrade to V200R001C00SPC700

V100R005C00

V100R005C10

V100R006C00

CloudEngine 8800

V100R006C00

Upgrade to V200R001C00SPC700

CloudEngine 12800

V100R003C10

Upgrade to V200R001C00SPC700

V100R005C00

V100R005C10

V100R006C00

Successful exploit could allow the attacker to cause the main control board of the affected device reboot.

The vulnerability classification has been performed by using the CVSSv3 scoring system (https://www.first.org/cvss/specification-document).

Base Score: 6.3 (AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H)

Temporal Score: 5.9 (E:F/RL:O/RC:C)

1. Prerequisite:

1)  The attacker gains access to the network of the affected device.

2)  CFM is enabled and MEP is configured on the affected device.

2. Attacking procedure:

An adjacent attacker could exploit this vulnerability by sending crafted packets to the affected products. An exploit could allow the attacker to cause the main control board of the affected device reboot.

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 was discovered by Huawei internal tester.

2016-11-16 V1.0 INITIAL

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.