A vulnerability classified as critical was found in Huawei P20 (Smartphone Operating System). Affected by this vulnerability is an unknown functionality of the component Factory Reset Protection. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

There is a Factory Reset Protection (FRP) bypass security vulnerability in P20 Huawei smart phones versions before Emily-AL00A 9.0.0.167(C00E81R1P21T8). When re-configuring the mobile phone using the FRP function, an attacker can delete the activation lock after a series of operations. As a result, the FRP function is bypassed and the attacker gains access to the smartphone.

The bug was discovered 02/28/2019. The weakness was published 06/04/2019 (Website). It is possible to read the advisory at huawei.com. This vulnerability is known as CVE-2019-5306 since 01/04/2019. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 96 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 9.0.0.167(C00E81R1P21T8) eliminates this vulnerability.

Similar entry is available at VDB-135952.

Productinfo

Type

• Smartphone Operating System

Vendor

• Huawei

Name

• P20

Version

• 8.1.0.171(C00)
• 9.0.0.159
• 9.0.0.167

License

• commercial

CPE 2.3info

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CPE 2.2info

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