Local privilege escalation via DLL search path
Published Feb 4, 2022 · Updated Sep 16, 2024
A DLL hijacking flaw in AMD Radeon Software before 21.4.1 allows local users to execute malicious code via the Windows PATH. The loader searches PATH locations for DLLs without constraining trusted directories, allowing an unprivileged user to plant a malicious library that a Radeon component loads. Exploitation requires local access and user interaction with the affected software; successful loading can execute attacker code with the process's privileges, including elevation where a privileged component performs the load.
Summary
What happened
A DLL hijacking flaw in AMD Radeon Software before 21.4.1 allows local users to execute malicious code via the Windows PATH. The loader searches PATH locations for DLLs without constraining trusted directories, allowing an unprivileged user to plant a malicious library that a Radeon component loads. Exploitation requires local access and user interaction with the affected software; successful loading can execute attacker code with the process's privileges, including elevation where a privileged component performs the load.
The record
- CVE
- CVE-2020-12891
- Published
- Feb 4, 2022
- Updated
- Sep 16, 2024
- Vendor
- AMD
- Product
- Radeon Software
- Classifications
- CWE-427, T1574.001
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 4, 2022CVE publishedPublication date reported by the CVE source.
- Sep 16, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Radeon Driver <21.4.1
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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