Remote privilege escalation via missing RPC authorization
Published Jun 15, 2022 · Updated Jan 2, 2025
Improper authorization in Microsoft Windows Server RVSS allows remote authenticated users to gain elevated privileges over the network. The FssAgentRPC server accepts shadow-copy requests without enforcing local Administrator or Backup Operator membership. A network-authenticated account can perform privileged shadow-copy creation or deletion against remote SMB shares without the required file-server role.
Summary
What happened
Improper authorization in Microsoft Windows Server RVSS allows remote authenticated users to gain elevated privileges over the network. The FssAgentRPC server accepts shadow-copy requests without enforcing local Administrator or Backup Operator membership. A network-authenticated account can perform privileged shadow-copy creation or deletion against remote SMB shares without the required file-server role.
The record
- CVE
- CVE-2022-30154
- Published
- Jun 15, 2022
- Updated
- Jan 2, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 15, 2022CVE publishedPublication date reported by the CVE source.
- Jan 2, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=10.0.17763.0 <10.0.17763.3046
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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