There is a Denial of Service (DoS) vulnerability in Huawei FusionAccess Product. Due to insufficient verification on specific input, attackers can exploit this vulnerability by sending constructed messages to the affected device through other device on the same network. Successful exploit could cause affected devices abnormal. (Vulnerability ID: HWPSIRT-2020-04105)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-1825.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:
Resolved Product and Version
Versions earlier than 6.5.1.SPC002
Successful exploit could cause affected devices abnormal.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 6.5 (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Temporal Score: 6.0 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker may gain access to other device on the same network as the affected device.
Due to insufficient verification on specific input, attackers can exploit this vulnerability by sending constructed messages to the affected device through other device on the same network. Successful exploit could cause affected devices abnormal.
Perform the following operations to prevent the vulnerability, users are advised to contact Huawei TAC for further guidance.
1. Ensure that the WI service access gateway is enabled.
2. Configure firewall communication rules.
Method 1: Configure network firewall rules by referring to the firewall policies of the product and allow only the management nodes to access the ports used for communication between user VMs and management nodes.
Method 2: Configure the inbound rules of the firewall in the user VM OS to allow only the management node to access the ports used for communication between the user VM and the management node.
Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.
This vulnerability was reported to Huawei PSIRT by security researchers. Huawei would like to thank these security researchers for working with us and coordinated vulnerability disclosure to protect our customers.
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.