SYSTEM code execution via storport integer overflow
Published Oct 13, 2021 · Updated Aug 4, 2024
Integer overflow in storport.sys in Microsoft Windows allows local users to elevate privileges and execute arbitrary code as SYSTEM. The driver insufficiently validates user-supplied data, allowing an integer overflow before a memory write. Exploitation requires prior low-privileged code execution on the target, after which the attacker gains SYSTEM-level execution.
Summary
What happened
Integer overflow in storport.sys in Microsoft Windows allows local users to elevate privileges and execute arbitrary code as SYSTEM. The driver insufficiently validates user-supplied data, allowing an integer overflow before a memory write. Exploitation requires prior low-privileged code execution on the target, after which the attacker gains SYSTEM-level execution.
The record
- CVE
- CVE-2021-40489
- Published
- Oct 13, 2021
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-269, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 13, 2021CVE 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.0 <10.0.10240.19086
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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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