Service interruption via directory-junction file deletion
Published Jan 12, 2021 · Updated Oct 8, 2024
File deletion in Microsoft Windows InstallService allows local users to interrupt affected systems through a crafted directory junction. The Microsoft Store Install Service follows an attacker-created directory junction and deletes a file at the redirected location. Low-privileged code execution on the target is required; ZDI bounds the demonstrated result to denial of service, while Microsoft classifies the issue as elevation of privilege.
Summary
What happened
File deletion in Microsoft Windows InstallService allows local users to interrupt affected systems through a crafted directory junction. The Microsoft Store Install Service follows an attacker-created directory junction and deletes a file at the redirected location. Low-privileged code execution on the target is required; ZDI bounds the demonstrated result to denial of service, while Microsoft classifies the issue as elevation of privilege.
The record
- CVE
- CVE-2021-1697
- Published
- Jan 12, 2021
- Updated
- Oct 8, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-269, T1485
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 12, 2021CVE publishedPublication date reported by the CVE source.
- Oct 8, 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=10.0.0 <publication
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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