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Security Advisory - DoS Vulnerability in Huawei U1900 Products

  • SA No:Huawei-SA-20150909-02-U1900
  • Initial Release Date: Sep 09, 2015
  • Last Release Date: Sep 09, 2015


Huawei eSpace U1900 switch series provides professional IP voice solutions to meet communications requirements from various enterprises of different sizes. Huawei eSpace U1900 series includes eSpace U1910, U1911, U1930, U1960, U1980, and U1981.

A vulnerability exists in a module of U1900 series. This module does not initialize requested memory areas when processing specific timeout messages, which leads to out-of-bounds memory access that results in system restart. (Vulnerability ID: HWPSIRT-2015-08035)

Product Name

Affected Version

Resolved Product and Version

eSpace U1910/U1911/U1930/U1960/U1980/U1981

V200R003C00SPC200

V200R003C00SPC300


An attacker may exploit this vulnerability to restart the device, which leads to DoS attacks.

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

Base Score: 7.8 (AV:N/AC:L/Au:N/C:N/I:N/A:C)

Temporal Score: 6.4 (E:F/RL:O/RC:C)

1. Prerequisite:

The attacker can access the device network.

2. Attacking procedure:

The attacker accesses the network that the U1900 series resides, and the U1900 series is triggered to generate and process specific timeout messages. As a module of U1900 series does not initialize requested memory areas when processing the messages, which leads to out-of-bounds memory access that results in system restart.

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 was reported privately to Huawei by Mickey Shkatov from Intel Advanced Threat Research Team and Jesse Michael from Intel. Huawei expresses our appreciation for Mickey Shkatov’s and Jesse Michael’s coordinated vulnerability disclosure with Huawei.

Huawei PSIRT is not aware of any malicious use of the vulnerabilities described in this advisory.

For security problems about Huawei products and solutions, please contact PSIRT@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.

2015-09-09 V1.0 INITIAL

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Complete information on 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/.