Privilege escalation via writable shared ShaderCache directory
Published Mar 12, 2020 · Updated Aug 4, 2024
Improper access control in Intel Graphics Drivers before 26.20.100.7463 allows local users to corrupt files or interrupt service. The shared C:\ProgramData\Intel\ShaderCache directory grants broad write control, allowing a directory mount point to redirect privileged cache-file creation into protected locations. Exploitation requires authenticated local access and a UAC prompt; the demonstrated path can place attacker-controlled files in protected directories and elevate privileges.
Summary
What happened
Improper access control in Intel Graphics Drivers before 26.20.100.7463 allows local users to corrupt files or interrupt service. The shared C:\ProgramData\Intel\ShaderCache directory grants broad write control, allowing a directory mount point to redirect privileged cache-file creation into protected locations. Exploitation requires authenticated local access and a UAC prompt; the demonstrated path can place attacker-controlled files in protected directories and elevate privileges.
The record
- CVE
- CVE-2020-0516
- Published
- Mar 12, 2020
- Updated
- Aug 4, 2024
- Vendor
- Topcon Positioning Systems, Inc.
- Product
- Intel Graphics Drivers
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 12, 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=before version 26.20.100.7463
- Affected versionversion=See advisory https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00315.html
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
- Intel ShaderCache Arbitrary File Creation EoP proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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