There is a weak algorithm vulnerability in Huawei smartphone. The protection is insufficient for the modules that should be protected. Local attackers can exploit this vulnerability to affect the integrity of certain module. (Vulnerability ID: HWPSIRT-2020-37421)
This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2021-22307.
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-20210127-06-smartphone-en
The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).
Base Score: 5.3 (AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:L)
Temporal Score: 4.9 (E:F/RL:O/RC:C)
This vulnerability can be exploited only when the following conditions are present:
The attacker accesses the affected device locally.
There is a weak algorithm vulnerability in Huawei smartphone. The protection is insufficient for the modules that should be protected. Local attackers can exploit this vulnerability to affect the integrity of certain module.
This vulnerability was reported to Huawei PSIRT by security researcher. Huawei would like to thank security researcher for working with us and coordinated vulnerability disclosure to protect our customers.
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