Security Advisory - Out-Of-Bounds Write Vulnerability on Several Huawei Products

The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Temporal Score: 6.0 (E:F/RL:O/RC:C)

This vulnerability can be exploited only when the following conditions are present:

1. An attacker could access the affected device's network.

2. A user executes a query command on the affected device.

Vulnerability details:

When a user executes a query command after the device received an abnormal OSPF message, the software writes data past the end of the intended buffer due to the insufficient verify the input data. An unauthenticated, remote attacker could exploit this vulnerability by sending abnormal OSPF messages to the device. A successful exploit could cause the system to crash.

Perform the following one or two configurations can meet the requirements to avoid vulnerability. 

1. Configure the following commands in interface view: 

ospf authentication-mode {md5 | hmac-md5 | hmac-sha256} 

ospf authentication-mode keychain 

2. Configure the following commands in ospf-area view: 

authentication-mode {md5 | hmac-md5 | hmac-sha256} 

authentication-mode keychain 

For more detailed information, see the product handbook.

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.

2018-02-14 V1.0 INITIAL

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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.