There is an improper authorization vulnerability in several smartphones. The software does not properly restrict certain user's modification of certain configuration file, successful exploit could allow the attacker to bypass app lock after a series of operation in ADB mode. (Vulnerability ID: HWPSIRT-2019-07114)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-1807.
Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:
Resolved Product and Version
HUAWEI Mate 20
Versions earlier than 10.0.0.188(C00E74R3P8)
Successful exploit could allow the attacker to bypass app lock after a series of operation in ADB mode.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 3.5 (AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
Temporal Score: 3.3 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker could execute commands in ADB mode.
The software does not properly restrict certain user's modification of certain configuration file, successful exploit could allow the attacker to bypass app lock after a series of operation in ADB mode.
The devices that support automatic update will receive a system update prompt. You can install the update to fix the vulnerability.
This vulnerability was reported to Huawei PSIRT by an external security researcher Ding Yicong. Huawei would like to thank Ding Yicong for working with us and coordinated vulnerability disclosure to protect our customers.
2020-04-22 V1.0 INITIAL
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