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Security Advisory - FRP Bypass Vulnerability in Huawei Smart Phones

  • SA No:huawei-sa-20180905-01-frpbypass
  • Initial Release Date: 2018-09-05
  • Last Release Date: 2018-09-05

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 disable the boot wizard by enable the talkback function. As a result, the FRP function is bypassed. (Vulnerability ID: HWPSIRT-2017-12057)
This vulnerability has been assigned a CVE ID: CVE-2018-7939.
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-20180905-01-frpbypass-en

Product Name

Affected Version

Resolved Product and Version

G9 Lite

The versions before VNS-L53C605B120CUSTC605D103

Upgrade to VNS-L53C605B120CUSTC605D103

Honor 5A

The versions before CAM-L03C605B143CUSTC605D008

CAM-L03C605B143CUSTC605D008

The versions before CAM-L21C10B145

CAM-L21C10B145

The versions before CAM-L21C185B156

CAM-L21C185B156

The versions before CAM-L21C223B133

CAM-L21C223B133

The versions before CAM-L21C432B210

CAM-L21C432B210

The versions before CAM-L21C464B170

CAM-L21C464B170

The versions before CAM-L21C636B245

CAM-L21C636B245

Honor 6X

The versions before Berlin-L21C10B372

Berlin-L21C10B372

The versions before Berlin-L21C185B363

Berlin-L21C185B363

The versions before Berlin-L21C464B137

Berlin-L21C464B137

The versions before Berlin-L23C605B161

Berlin-L23C605B161

Honor 8

The versions before FRD-L09C10B387

FRD-L09C10B387

The versions before FRD-L09C185B387

FRD-L09C185B387

The versions before FRD-L09C432B398

FRD-L09C432B398

The versions before FRD-L09C636B387

FRD-L09C636B387

The versions before FRD-L19C10B387

FRD-L19C10B387

The versions before FRD-L19C432B399

FRD-L19C432B399

The versions before FRD-L19C636B387

FRD-L19C636B387


An attacker can exploit this vulnerability 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)
This vulnerability can be exploited only when the following conditions are present:
Attacker gets the smart phone device.
Vulnerability details:
There is 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 disable the boot wizard by enable the talkback function. As a result, the FRP function is bypassed.
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.

2018-09-05 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.