SYSTEM code execution via redirected GameStream log
Published Apr 20, 2021 · Updated Aug 3, 2024
Local privilege escalation in NVIDIA GeForce Experience before 3.22 allows local users to execute commands as SYSTEM through GameStream. The GameStream service follows an attacker-created NTFS link for nvstreamsvcCurrent.log and copies user-writable settings into the linked recovery batch file. Low-privileged local access is required; GameStream logging and repeated service crashes execute the injected batch commands as SYSTEM.
Summary
What happened
Local privilege escalation in NVIDIA GeForce Experience before 3.22 allows local users to execute commands as SYSTEM through GameStream. The GameStream service follows an attacker-created NTFS link for nvstreamsvcCurrent.log and copies user-writable settings into the linked recovery batch file. Low-privileged local access is required; GameStream logging and repeated service crashes execute the injected batch commands as SYSTEM.
The record
- CVE
- CVE-2021-1079
- Published
- Apr 20, 2021
- Updated
- Aug 3, 2024
- Vendor
- NVIDIA
- Product
- NVIDIA GeForce Experience
- Classifications
- T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 20, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=All versions prior to 3.22
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
- CVE-2021-1079 GameStream SYSTEM command-execution chainfunctional · demonstrated
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Technologies
Your stack
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Your stack
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