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Security Advisory - DoS Vulnerability in Some Huawei Firewall Products

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

Some Huawei firewall products have a denial of service (DoS) vulnerability. Due to improper validation of some specific fields of DHCP message, an unauthenticated attacker may send abnormal DHCP request packets to the affected products. Successful exploit of this vulnerability could lead to a DoS condition. (Vulnerability ID: HWPSIRT-2016-08064)

This vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2016-8796.

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-firewall-en

Product Name

Affected Version

Resolved Product and Version

USG9520

V300R001C01

V300R001C01SPCa00

USG9560

V300R001C01

V300R001C01SPCa00

USG9580

V300R001C01

V300R001C01SPCa00

Successful exploit of this vulnerability could lead to a DoS condition.

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

Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Temporal Score: 7.0 (E:F/RL:O/RC:C)

1. Prerequisite:

The attacker gains access to the affected product network;

2. Attacking procedure:

Due to improper validation of some specific fields of DHCP message, an unauthenticated attacker may send abnormal DHCP request packets to the affected products. Successful exploit of this vulnerability could lead to a DoS condition.  

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.