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Security Advisory-Memory Leak Vulnerability on USG products

  • SA No:Huawei-SA-20141224-01-USG
  • Initial Release Date: Dec 24, 2014
  • Last Release Date: Mar 20, 2015

The HUAWEI USG9560/9520/9580 is a high-end 10-Gigabit Firewall. The USG9560/9520/9580 applies to Internet backbone networks, IP dedicated backbone networks, IP metropolitan area networks (MANs), Internet data center (IDC) egress. This security gateway provides multiple powerful and all-round security solutions with great flexibility.

An attacker can request a special web page to cause the memory leak of the MPU. When the memory is exhausted, the MPU restarts and active/standby main processing unit (MPU) switchover is triggered. (Vulnerability ID: HWPSIRT-2014-1223)

This Vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2014-9697.

Currently, official fixes are available.

Product Name

Affected Version

Solved version

USG9560/9520/9580

V300R001C00

V300R001C01SPC300

V300R001C01SPC100

Upgrade to  V300R001C01SPC300


An attacker can exploit this vulnerability to cause the memory leak of the MPU. When the memory is exhausted, the MPU restarts and active/standby MPU switchover is triggered.


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)

Overall Score: 4.1

This vulnerability can be exploited only when the following conditions are present:

  1. The attacker can access the network.

Vulnerability details:

When the web module of the firewall receives a GET request for a special web page, the web module does not release the memory assigned for the request. When the memory is exhausted by requests for web pages that do not exist, the MPU restarts and the active/standby MPU switchover is triggered. 
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/security/psirt/report-vulnerabilities/index.htm.


This vulnerability is reported by Huawei internal tester. Huawei PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory. 

For security problems about Huawei products and solutions, please contactPSIRT@huawei.com.

For general problems about Huawei products and solutions, please directly contact Huawei TAC (Huawei Technical Assistance Center) to request the configuration or technical assistance.


2015-3-20 V1.1 UPDATED Summary

2012-12-24 V1.0 INITIAL

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Complete information for providing feedback on security vulnerability of Huawei products, getting support for Huawei security incident response services, and obtaining Huawei security vulnerability information, is available on Huawei's worldwide website at http://www.huawei.com/en/security/psirt/.