Authenticated code execution via crafted NT_TRANSACT_IOCTL request
Published Jun 9, 2020 · Updated Aug 4, 2024
Remote code execution in Microsoft Windows SMBv1 server allows remote authenticated users to execute code through a crafted request. The NT_TRANSACT_IOCTL path mishandles FSCTL_SIS_COPYFILE parameters, causing an integer underflow and memory corruption. Exploitation requires valid SMB credentials and a shared partition; the demonstrated public proof of concept crashes the target, while Microsoft rates code execution as the full impact.
Summary
What happened
Remote code execution in Microsoft Windows SMBv1 server allows remote authenticated users to execute code through a crafted request. The NT_TRANSACT_IOCTL path mishandles FSCTL_SIS_COPYFILE parameters, causing an integer underflow and memory corruption. Exploitation requires valid SMB credentials and a shared partition; the demonstrated public proof of concept crashes the target, while Microsoft rates code execution as the full impact.
The record
- CVE
- CVE-2020-1301
- Published
- Jun 9, 2020
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1909
- Classifications
- T1210
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 9, 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
- Airbus SMBLost denial-of-service proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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