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Security Advisory- SSH Username Information Disclosure Vulnerability in Huawei Campus Switch

  • SA No:Huawei-SA-20140820-01-Campus Switch
  • Initial Release Date: 2014-08-20
  • Last Release Date: 2014-08-27

Some versions of Huawei Campus switch series products S9300/S9300E/S7700/S9700

/S5700/S6700/S5300/S6300/S2300/S2700/S3300/S3700 are affected by username information disclosure vulnerability.

When the maintenance terminal of a Huawei Campus switch uses SSH to log in to a server, attackers can guess whether a username exists on the switch based on the messages returned by the server. (Vulnerability ID: HWPSIRT-2014-0312)

 

This Vulnerability has been assigned Common Vulnerabilities and Exposures (CVE) ID: CVE-2014-5394.

Campus Switch series products

Campus switch S9300/S9300E/S7700/S9700

V200R001C00SPC300

Campus switch S9300/S9300E/S7700/S9700

V200R002C00SPC300

Campus switch S9300/S9300E/S7700/S9700

V200R003C00SPC500

Campus switch S5700/S6700/S5300/S6300

V200R001C00SPC300

Campus switch S5700/S6700/S5300/S6300

V200R002C00SPC300

Campus switch S5700/S6700/S5300/S6300

V200R003C00SPC300

Campus switch S2300/S2700/S3300/S3700

V100R006C05



By exploiting the vulnerability, attackers can guess whether a user name exists on the switch, leading to the disclosure of sensitive username information and brute force cracking.

 

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

Base Score: 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N)

Temporal Score: 4.1 (E:F/RL:O/RC:C)

1. Prerequisite:

1)  SSH is enabled on the Huawei Campus switch device.

2)  The attacker gains access to the Huawei Campus switch device.

2. Attacking procedure:

When the maintenance terminal of a Huawei Campus device logs in to the server using SSH, the attacker can guess the username by several attempts, leading to the disclosure of sensitive username information and brute force cracking.

 

Upgrading version and version status:

Product name

Solved version

Version Status

Campus switch S9300/S9300E/S7700/S9700/ S5700/S6700/S5300/S6300

V200R005C00SPC300

Released

Campus switch S2300/S2700/S3300/S3700

V100R006SPH018

Released

 






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/enterprise/. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/security/psirt/report-vulnerabilities/index.htm.



This vulnerability is reported by Huawei’s internal security test team. Huawei PSIRT is not aware of any public announcements or malicious use of the vulnerability 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.


2014-08-27 V1.1 UPDATED update the information of CVE-ID

2014-08-20 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 http://www.huawei.com/en/security/psirt/.