Process-memory disclosure via malformed PE resource entry
Published Apr 15, 2020 · Updated Aug 4, 2024
Out-of-bounds read in KERNELBASE.dll in Microsoft Windows allows local users to disclose process memory through a crafted PE file. The module fails to validate a Portable Executable Resource Directory Entry before reading beyond an allocated buffer. Exploitation requires local execution or opening attacker-controlled content; the disclosure can support a separate compromise but does not directly execute code or elevate privileges.
Summary
What happened
Out-of-bounds read in KERNELBASE.dll in Microsoft Windows allows local users to disclose process memory through a crafted PE file. The module fails to validate a Portable Executable Resource Directory Entry before reading beyond an allocated buffer. Exploitation requires local execution or opening attacker-controlled content; the disclosure can support a separate compromise but does not directly execute code or elevate privileges.
The record
- CVE
- CVE-2020-0821
- Published
- Apr 15, 2020
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1909
- Classifications
- T1204.002
- 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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- Affected versionversion=unspecified
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Your stack
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