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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:2018-05-02
  • Last Release Date:2018-05-02

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.
None


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

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.