Local privilege escalation via unsafe DLL search
Published Feb 4, 2022 · Updated Sep 17, 2024
DLL hijacking in Acronis Cyber Protect Home Office before build 39612 and True Image 2021 before build 39287 allows local users to gain privileges. Acronis identifies an uncontrolled DLL search but has not disclosed the affected executable, service, DLL name, or search location. Exploitation requires existing low-privileged local access and user interaction; a successful substitution runs attacker-controlled code with elevated privileges.
Summary
What happened
DLL hijacking in Acronis Cyber Protect Home Office before build 39612 and True Image 2021 before build 39287 allows local users to gain privileges. Acronis identifies an uncontrolled DLL search but has not disclosed the affected executable, service, DLL name, or search location. Exploitation requires existing low-privileged local access and user interaction; a successful substitution runs attacker-controlled code with elevated privileges.
The record
- CVE
- CVE-2021-44205
- Published
- Feb 4, 2022
- Updated
- Sep 17, 2024
- Vendor
- Acronis
- Product
- Acronis True Image
- Classifications
- CWE-427, T1574.001
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 4, 2022CVE publishedPublication date reported by the CVE source.
- Sep 17, 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=unspecified <39287
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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