Local privilege escalation via symbolic links
Published Apr 15, 2020 · Updated Aug 4, 2024
Elevation of privilege in Microsoft OneDrive for Windows before 19.232.1124.0010 allows local users to overwrite files through symbolic links. The OneDrive updater performs file writes with elevation without correctly preventing a filename from resolving through a symbolic link to an unintended target. Exploitation requires a user logged on to Windows who can run a specially crafted application; successful exploitation can overwrite or delete targeted files with elevated status, enabling privilege escalation.
Summary
What happened
Elevation of privilege in Microsoft OneDrive for Windows before 19.232.1124.0010 allows local users to overwrite files through symbolic links. The OneDrive updater performs file writes with elevation without correctly preventing a filename from resolving through a symbolic link to an unintended target. Exploitation requires a user logged on to Windows who can run a specially crafted application; successful exploitation can overwrite or delete targeted files with elevated status, enabling privilege escalation.
The record
- CVE
- CVE-2020-0935
- Published
- Apr 15, 2020
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Microsoft OneDrive for Windows
- Classifications
- CWE-269, T1578.005
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 15, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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
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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