Kernel-address disclosure via uninitialized pointer return
Published Apr 11, 2023 · Updated Jan 23, 2025
Information disclosure in the Microsoft Windows Kernel allows local users with low privileges to read kernel memory through crafted local calls. A public proof of concept shows the kernel returns an uninitialized kernel pointer to user mode, exposing an address that should have been cleared. Local code execution is required; the disclosed primitive reveals kernel address information but does not itself write memory or execute code.
Summary
What happened
Information disclosure in the Microsoft Windows Kernel allows local users with low privileges to read kernel memory through crafted local calls. A public proof of concept shows the kernel returns an uninitialized kernel pointer to user mode, exposing an address that should have been cleared. Local code execution is required; the disclosed primitive reveals kernel address information but does not itself write memory or execute code.
The record
- CVE
- CVE-2023-28271
- Published
- Apr 11, 2023
- Updated
- Jan 23, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-200
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 11, 2023CVE publishedPublication date reported by the CVE source.
- Jan 23, 2025Record 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=10.0.10240.0 <10.0.10240.19869
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
- Windows Kernel Uninitialized Memory Pointer Disclosure proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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