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Security Advisory – Authentication Caused Memory Overflow Vulnerability in Some Huawei Switch Products

  • SA No:Huawei-SA-20150319-01-Campus switch
  • Initial Release Date: Mar 19, 2015
  • Last Release Date: Mar 31, 2015

The user authentication module in some Huawei switch products has the memory overflow vulnerability that can cause device restart when users log in improperly

(Vulnerability ID: HWPSIRT-2015-02014).

This Vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2015-2800.


Affected Versions

Fixed Versions

Campus switch S5700



Campus switch S5300



Campus switch S6300



Campus switch S6700



Campus switch S7700



Campus switch S9300



Campus switch S9700



An attacker can exploit this vulnerability to restart the target device.

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

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)

1. Prerequisite:

The attacker can be connected to the target device.

2. Attack procedure:

The service processing function does not verify the validity of inputs. Therefore, if users log in to the device with a special user name, array access violation may be caused, resulting in device 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

This vulnerability was found by vhunter team. Huawei PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.

Huawei express our appreciation for vhunter team concerns on Huawei products. 

For security problems about Huawei products and solutions, please

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

2015-03-31 V1.1 UPDATED Summary

2015-03-19 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