Kernel code execution via WindowServer integer overflow
Published Jun 9, 2020 · Updated Aug 4, 2024
Integer overflow in WindowServer in Apple macOS Catalina 10.15.4 allows local users to execute arbitrary code with kernel privileges. Apple identifies inadequate input validation as the cause but does not disclose the affected integer operation or triggering input. A locally running application is required; successful exploitation crosses into kernel privilege on High Sierra 10.13.6, Mojave 10.14.6, and Catalina 10.15.4.
Summary
What happened
Integer overflow in WindowServer in Apple macOS Catalina 10.15.4 allows local users to execute arbitrary code with kernel privileges. Apple identifies inadequate input validation as the cause but does not disclose the affected integer operation or triggering input. A locally running application is required; successful exploitation crosses into kernel privilege on High Sierra 10.13.6, Mojave 10.14.6, and Catalina 10.15.4.
The record
- CVE
- CVE-2020-9841
- Published
- Jun 9, 2020
- Updated
- Aug 4, 2024
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-190, CAPEC-92, T1068
- Attack vector
- local
- Privileges
- unauthenticated
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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <macOS Catalina 10.15.5
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
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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