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Security Advisory - Defense Mechanism Bypass Vulnerability in Huawei USG Products

  • SA No:huawei-sa-20161026-01-usg
  • Initial Release Date: Oct 26, 2016
  • Last Release Date: Oct 26, 2016

There is a defense mechanism bypass vulnerability in Huawei USG products. Successful exploit could allow an attacker to bypass the anti-DDoS module of the USGs to send massive HTTP packets, possibly causing a denial of service condition on the backend server.  (Vulnerability ID: HWPSIRT-2016-07050)

This vulnerability has been assigned CVE ID: CVE-2016-8798.

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-20161026-01-usg-en

Product Name

Affected Version

Resolved Product and Version

USG5500

V300R001C00

Upgrade to V300R001C10SPC600

V300R001C10

V300R001C10SPC600

An attacker can exploit this vulnerability to bypass the anti-DDoS module of the USGs to send massive HTTP packets, possibly causing a denial of service condition on the backend server.

The vulnerability classification has been performed by using the CVSSv2 scoring system (http://www.first.org/cvss/).

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

Temporal Score: 4.1 (E:F/RL:O/RC:C)

1. Prerequisite:
The attacker has connected to device.

2. Attacking procedure:
There is a defense mechanism bypass vulnerability in Huawei USG products. Successful exploit could allow an attacker to bypass the anti-DDoS module of the USGs to send massive HTTP packets, possibly causing a denial of service condition on the backend server.

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 disclosed by the Third Research Institute of Ministry of Public Security on the Cyber Force Fornum (CFF) Hacker Show sub-forum. Huawei would like to thank “Third Research Institute of Ministry of Public Security” for working with us and coordinated vulnerability disclosure to protect our customers.

2016-10-26 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.