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Security Advisory - Path Traversal Vulnerability in Some Huawei Home Gateway Products

  • SA No:huawei-sa-20180502-01-gateway
  • Initial Release Date: May 02, 2018
  • Last Release Date: May 02, 2018

There is a path traversal vulnerability on some Huawei home gateway products. Due to the lack of validation while these home gateway products install APK plugins, an attacker tricks a user into installing a malicious APK plugin, and plugin can overwrite arbitrary file of devices. Successful exploit may result in arbitrary code execution or privilege escalation. (Vulnerability ID: HWPSIRT-2018-02030)
This vulnerability has been assigned a CVE ID: CVE-2018-7933.
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-20180502-01-gateway-en

Product Name

Affected Version

Resolved Product and Version

HiRouter-CD20

The versions before HiRouter-CD20-10 1.9.6

HiRouter-CD20-10 1.9.6

WS5200

The versions before WS5200-10 1.9.6

Upgrade to WS5200-10 1.9.6


Successful exploit may result in arbitrary code execution or privilege escalation.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 6.1 (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L)
Temporal Score: 5.7 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker tricks a user into installing a plugin on the device.
Vulnerability details:
There is a path traversal vulnerability on some Huawei home gateway products. Due to the lack of validation while these home gateway products install APK plugins, an attacker tricks a user into installing a malicious APK plugin, and plugin can overwrite arbitrary file of devices. Successful exploit may result in arbitrary code execution or privilege escalation.

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

This vulnerability was discovered by Huawei internal tester.
2018-05-02 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.

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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.

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