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Security Advisory- Huawei VSM Default User Groups’ Privilege Escalation

SA No: Huawei-SA-20130403-01-VSM

Initial Release Date: 04-03-2013

Last Release Date: 04-20-2013

Summary

VSM (Versatile Security Manager) is a unified security service management system launched by Huawei for carrier and enterprise customers.

VSM contains a vulnerability that default user groups’ privilege could be escalated when one user logs in to the system to modify default user groups’ permission configurations. The vulnerability is due to improper validation of authentication to the accessed user account (Vulnerability ID: HWNSIRT-2013-0302).

Currently, the official version VSM V200R002C00SPC300 has been released to fix this vulnerability.

Affected Products

Seco VSM V200R002C00

Seco VSM V200R002C00SPC100

Seco VSM V200R002C00SPC200

Not affected products

Seco VSM V100R001

Seco VSM V100R003

Seco VSM V200R002C00SPC300 and later

Impact

By exploiting the vulnerability successfully, it may cause the privilege escalation of VSM default user groups, and then users in the user group could operate the system without authentication.

Vulnerability Scoring Details

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

The score of the vulnerability is following:

Base Score: 9.0(AV:N/AC:L/Au:S/C:C/I:C/A:C)

Temporal Score: 7.5 (E:F/RL:O/RC:C)

Overall Score: 7.5

Technical Details

Vulnerability exploitation prerequisites:

The attacker can access VSM system,

The attacker has VSM user account and password.

Vulnerability details:

Any user in the VSM default user groups can change default groups’ privilege configuration without specific authentication after it logs in to the VSM system, and then it may cause the privilege escalation of the default user group in VSM.

Temporary Fixes

Null ‬

Software Versions and Fixes

Solution

Optimize the VSM authentication policy of privilege management to prevent the privilege escalation vulnerability.

This vulnerability has been fixed in the following version.

VSM V200R002C00SPC300 2013-02-02

Obtaining Fixed Software

Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades, or obtain them through Huawei Enterprise worldwide website at http://support.huawei.com/enterprise/. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/security/psirt/report-vulnerabilities/index.htm.

The link for VSM V200R002C00SPC300:

http://support.huawei.com/enterprise/softdownload.action?idAbsPath=fixnode01|7919710|9856717|7923123|9858904|8577742&pid=8577742&vrc=8616279|8616281|8616284|9470142&show=showVDetail&tab=bz&bz_vr=8616281&bz_vrc=&nbz_vr=null

Exploitation and Vulnerability Source

This vulnerability is reported by Huawei internal tester and hasn’t received any impact report. Huawei PSIRT is not aware of any malicious use launched to attack through the vulnerability described in this advisory. 

Contact Channel for Technical 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

2013-04-03 V1.0 INITIAL

2013-04-20 V1.1 UPDATED update CVSS score

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/

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