There is an improper authorization vulnerability in several smartphones. The digital balance function does not sufficiently restrict the using time of certain user, successful exploit could allow the user break the limit of digital balance function after a series of operations with a PC. (Vulnerability ID: HWPSIRT-2019-09110)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-1831.
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 10.0.0.195(SP31C00E74R3P8)
Successful exploit could allow the user break the limit of digital balance function after a series of operations with a PC.
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 2.4 (AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Temporal Score: 2.3 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker gains the phone as a limited user.
The digital balance function does not sufficiently restrict the using time of certain user, successful exploit could allow the user break the limit of digital balance function after a series of operations with a PC.
The product that supports 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 security researcher Ding Yicong. Huawei would like to thank Ding Yicong for working with us and coordinated vulnerability disclosure to protect our customers.
2020-05-27 V1.0 INITIAL
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