VM process crash via shader bytecode over-read
Published Jun 25, 2020 · Updated Aug 4, 2024
Out-of-bounds read in VMware ESXi 6.5, 6.7, and 7.0, Workstation 15.x, and Fusion 11.x allows local users to crash the vmx process. Shader bytecode parsing reads past the end of an allocated array when crafted shader elements supply out-of-range data. Exploitation requires low-privileged code execution inside a virtual machine with 3D graphics enabled; the documented result is a partial service interruption, while ZDI also reports limited information disclosure usable in an exploit chain.
Summary
What happened
Out-of-bounds read in VMware ESXi 6.5, 6.7, and 7.0, Workstation 15.x, and Fusion 11.x allows local users to crash the vmx process. Shader bytecode parsing reads past the end of an allocated array when crafted shader elements supply out-of-range data. Exploitation requires low-privileged code execution inside a virtual machine with 3D graphics enabled; the documented result is a partial service interruption, while ZDI also reports limited information disclosure usable in an exploit chain.
The record
- CVE
- CVE-2020-3970
- Published
- Jun 25, 2020
- Updated
- Aug 4, 2024
- Vendor
- VMware
- Product
- VMware Workstation
- Classifications
- CWE-125, T1499.004
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Jun 25, 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=15.x before 15.5.5
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.
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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