Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2021-37103

Incorrect Default Permissions

Published: Feb 25, 2022 | Modified: Mar 08, 2022
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-37103
CWEhttps://cwe.mitre.org/data/definitions/276.html

There is an improper permission management vulnerability in the Wallet apps. Successful exploitation of this vulnerability may affect service confidentiality.

Weakness

During installation, installed file permissions are set to allow anyone to modify those files.

Affected Software

Name Vendor Start Version End Version
Emui Huawei 9.1.0 (including) 9.1.0 (including)
Emui Huawei 9.1.1 (including) 9.1.1 (including)
Emui Huawei 10.0.0 (including) 10.0.0 (including)
Emui Huawei 10.1.0 (including) 10.1.0 (including)
Emui Huawei 10.1.1 (including) 10.1.1 (including)
Emui Huawei 11.0.0 (including) 11.0.0 (including)
Magic_ui Huawei 2.1.1 (including) 2.1.1 (including)
Magic_ui Huawei 3.0.0 (including) 3.0.0 (including)
Magic_ui Huawei 3.1.0 (including) 3.1.0 (including)
Magic_ui Huawei 3.1.1 (including) 3.1.1 (including)
Magic_ui Huawei 4.0.0 (including) 4.0.0 (including)

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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