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Security Advisory - Denial of Service Vulnerability in Huawei Smart WiFi Router

  • SA No:huawei-sa-DoSViHSWR-8f632df1-en
  • Initial Release Date: 2022-12-08
  • Last Release Date: 2022-12-08

There is a denial of service vulnerability in the Wi-Fi module of the HUAWEI WS7100-20 Smart WiFi Router.Successful exploit could cause a denial of service (DoS) condition. (Vulnerability ID:HWPSIRT-2022-59488)
This vulnerability has been assigned a (CVE) ID: CVE-2022-46740

Affected Product

Affected Version

Resolved Version

WS7100-20

WS7100-20 10.0.5.33

WS7100-20 11.0.5.5


Successful exploit could cause a denial of service (DoS) condition.
Vulnerabilities are scored base on the CVSS v3.1 scoring system. For details please refer to: http://www.first.org/cvss/specification-document.
HWPSIRT-2022-59488:
Base score:4.3
Temporary score:4.0
Environmental Score:NA
CVSS v3.1 Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:F/RL:O/RC:C
HWPSIRT-2022-59488:
This vulnerability can be exploited only when the following conditions are present:
An attacker could send a crafted message to the device.
Technical details:
There is a denial of service vulnerability in the Wi-Fi module of the HUAWEI WS7100-20 Smart WiFi Router. Due to incorrect verification of external messages, An attacker can exploit this vulnerability by sending crafted packets to the device.Successful exploitation of this vulnerability may cause a denial of service vulnerability on the WS7100-20.
None


The product that supports automatic update will receive a system update prompt. You can install the update to fix the vulnerability.

The vulnerability was discovered by external researchers Vyron Kampourakis and Efstratios Chatzoglou.

2022-12-09 V1.1 Updated "Source";
2022-12-08 V1.0 Initial Release;

None

Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

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.