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Security Advisory - DoS Vulnerability in Some Huawei MBB Products

  • SA No:huawei-sa-20180428-01-mbb
  • Initial Release Date: 2018-04-28
  • Last Release Date: 2018-04-28

Some Huawei MBB (Mobile Broadband) products have a Denial of Service (DoS) vulnerability. When an attacker accessing device sends special http request to device, the webserver process will try to apply too much memory which can cause the device to become unable to respond. An attacker can launch a DoS attack by exploiting this vulnerability. (Vulnerability ID: HWPSIRT-2017-06105)

This vulnerability has been assigned a CVE ID: CVE-2017-17318.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180428-01-mbb-en

Product Name

Affected Version

Resolved Product and Version

E5771h-937

The versions before E5771h-937TCPU-V200R001B328D62SP00C1133

E5771h-937TCPU-V200R001B328D62SP00C1133

The versions before E5771h-937TCPU-V200R001B329D05SP00C1308

E5771h-937TCPU-V200R001B329D05SP00C1308


An attacker can launch an DoS attack by exploiting this vulnerability.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 6.5 (AV:A/AC:L/PR:N/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 gains access to the device by USB port or Wi-Fi.
Vulnerability details:
When an attacker accessing device sends special http request to device, the webserver process will try to apply too much memory which can cause the device to become unable to respond. An attacker can launch a DoS attack by exploiting this vulnerability.

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 discovered by Huawei internal tester.
2018-04-28 V1.0 INITIAL

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.

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