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Security Advisory-Overflow Vulnerabilities in SNMPv3
SA No: Huawei-SA-20130425-02
Initial Release Date: 04-25-2013
Last Release Date: 05-02-2013

Summary

Simple Network Management Protocol version 3(SNMPv3) is provided by Huawei for network and device management.

While the SNMPv3 is enable, 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.

Currently, workarounds are invalid and fixed version has been provided.

More version information are detailed below.

Affected Products

Router series products

AR 150/200/1200/2200/3200

V200R001, V200R002, V200R003

Impact

Attackers can execute injected arbitrary commands on the device by exploiting the vulnerability.

Vulnerability Scoring Details

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

Technique Details

1. Prerequisite:

SNMPv3 is enable;

The IP address of the vulnerable equipment is reachable.

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

Workarounds: There are no workarounds for the vulnerability.

Software Versions and Fixes

The overflow vulnerabilities are fixed by checking the related data copy in SNMPv3.

Version upgrade information and upgrade date:

Product name

Solved version

Solved time

AR 150/200/1200/2200/3200

V200R003C01SPC300

04-30-2013


Obtaining Fixed Software

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades, or obtain them through Huawei worldwide website at http://support.huawei.com/support/. For TAC contact information, please refer to Huawei worldwide website at

http://support.huawei.com/enterprise/NewsReadAction.action?contentId=NEWS1000000563

Exploitation and Vulnerability Source

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

Contact Channel for Technique Issue

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.

Revision History

2013-04-25 V1.0 INITIAL

2013-05-02 V1.1 UPDATED update the affected version

Declaration

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 Investment & Holding Co., Ltd. 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 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/.

News End