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Security Advisory - Overflow Vulnerabilities in SNMPv3
SA No: Huawei-SA-20130425-02
Initial Release Date: 2013-04-25
Last Release Date: 2015-11-23


Simple Network Management Protocol version 3(SNMPv3) is provided by Huawei for network and device management. While the SNMPv3 is enable on some Huawei products, attackers can crash the vulnerable equipment by sending malformed SNMPv3 messages, and make a denial of service (DoS) attack to vulnerable equipment remotely. (Vulnerability ID: HWNSIRT-2013-0427)
These vulnerabilities were first reported by Roberto Paleari of Emaze Networks S.p.A. Huawei would like to thank Roberto Paleari and Emaze Networks S.p.A for reporting these issues and for working with us to help protect the security of our customers.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

Software Versions and Fixes

Product Name

Affected Version

Resolved Product and Version

AR 150/ 200/ 1200/ 2200/ 3200


Upgrade to V200R003C01SPC300




CE12800/ CE6850/ CE5850/ CE5810


Upgrade to V100R003C00SPC600B223


Attackers can make a DoS attack to vulnerable equipment by exploiting the vulnerability.

Vulnerability Scoring Details

The vulnerability classification has been performed by using the CVSSv2 scoring system (

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

Temporal Score: 6.1 (E:P/RL:O/RC:C)

Technique Details

1. Prerequisite:

SNMPv3 is enabling on vulnerable Huawei products

2. Attacking procedure:

When parsing and process SNMPv3 messages, The checking of information copy is not enough and the stack shortage maybe occur, resulting in attacking remotely.

Temporary Fix


Obtaining Fixed Software

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at

Exploitation and Vulnerability Source

This vulnerability is reported by Roberto Paleari of Emaze Networks S.p.A. Huawei PSIRT is not aware of malicious use of the vulnerability described in this advisory.

Huawei express our appreciation for Roberto Paleari and Emaze Networks S.p.A’s concerns on Huawei products.

Contacts for Technique Issue

For security problems about Huawei products and solutions, please contact

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

Revision History

2015-11-23 V1.3 UPDATED update the affected version
2015-02-04 V1.2 UPDATED update content of “Impact”
2013-05-02 V1.1 UPDATED update the affected version
2013-04-25 V1.0 INITIAL




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.

Huawei Security Procedures

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

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