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Security Advisory - FRP Bypass Vulnerability in Huawei Smart Phones

  • SA No:huawei-sa-20161207-01-smartphone
  • Initial Release Date: Dec 07, 2016
  • Last Release Date: Dec 07, 2016

There is Factory Reset Protection (FRP) bypass security vulnerability in some Huawei smart phones. When re-configuring the mobile phone using the factory reset protection (FRP) function, an attacker can enter some functional modules without authorization and perform operations to update the Google account. As a result, the FRP function is bypassed. (Vulnerability ID: HWPSIRT-2016-09010)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2016-8776.

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-20161207-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

P9

EVA-AL10C00

EVA-AL10C00B195[1]

EVA-CL10C00

EVA-CL10C00B195[1]

EVA-DL10C00

EVA-DL10C00B195[1]

EVA-TL10C00

EVA-TL10C00B195[1]

P9 Lite

VNS-L21C185

VNS-L21C185B150[1]

[1] Mobile phones will receive a system update prompt. The vulnerabilities will be fixed after users install the update.

An attacker can modify the configuration of the smart phone and cause the FRP bypass.

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

Base Score: 4.6 (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Temporal Score: 4.3 (E:F/RL:O/RC:C)

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

Attacker gets the smartphone device.

2.Vulnerability details:

When re-configuring the mobile phone using the factory reset protection (FRP) function, an attacker can enter some functional modules without authorization and perform operations to update the Google account. As a result, the FRP function is bypassed.

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 Aung Khant Zaw from Myanmar. Huawei would like to thank Aung Khant Zaw for working with us and coordinated vulnerability disclosure to protect our customers.

2016-12-07 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.

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.