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Security Advisory - FRP Bypass Vulnerability on Some Huawei Smartphones

  • SA No:huawei-sa-20190228-01-smartphone
  • Initial Release Date: Feb 28, 2019
  • Last Release Date: Feb 28, 2019

There is a Factory Reset Protection (FRP) bypass security vulnerability in some Huawei smart phones. When re-configuring the mobile phone using the FRP function, an attacker can delete the activation lock after a series of operation, As a result, the FRP function is bypassed and the attacker gains access to the smartphone. (Vulnerability ID: HWPSIRT-2018-11009)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-5306.
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-20190228-01-smartphone-en

Product Name

Affected Version

Resolved Product and Version

P20

The versions before Emily-AL00A 9.0.0.167(C00E81R1P21T8)

Emily-AL00A 9.0.0.167(C00E81R1P21T8)

Successful exploit could allow an attacker to bypass the FRP and gain access to the smartphone.
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)
Overall Score: 4.3
This vulnerability can be exploited only when the following conditions are present:
The attacker has got the smartphone.
Vulnerability details:
There is a Factory Reset Protection (FRP) bypass security vulnerability in some Huawei smart phones. When re-configuring the mobile phone using the FRP function, an attacker can delete the activation lock after a series of operation, As a result, the FRP function is bypassed and the attacker gains access to the smartphone.

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.


2019-02-28 V1.0 INITIAL


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