Privilege escalation via allowlisted package impersonation
Published Dec 27, 2021 · Updated Aug 3, 2024
Privilege escalation in OPPO ColorOS 11 allows local users to obtain dangerous permissions by installing an app under an allowlisted package name. The default-grant-permissions XML pregrants permissions by package name even when the listed app is absent, so an impersonating package inherits them. Exploitation requires installation of the disguised app and user interaction; resulting access is limited to permissions assigned to that whitelist entry.
Summary
What happened
Privilege escalation in OPPO ColorOS 11 allows local users to obtain dangerous permissions by installing an app under an allowlisted package name. The default-grant-permissions XML pregrants permissions by package name even when the listed app is absent, so an impersonating package inherits them. Exploitation requires installation of the disguised app and user interaction; resulting access is limited to permissions assigned to that whitelist entry.
The record
- CVE
- CVE-2021-23244
- Published
- Dec 27, 2021
- Updated
- Aug 3, 2024
- Vendor
- OPPO
- Product
- ColorOS
- Classifications
- T1404
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 27, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=OPPO Mobile phones with ColorOS 11 version
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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