CVE-2023-39230: Intel Rapid Storage Privilege Escalation

CVE-2023-39230 Overview

CVE-2023-39230 is a privilege escalation vulnerability affecting Intel Rapid Storage Technology (RST) software. The vulnerability stems from insecure inherited permissions that allow an authenticated user with local access to potentially escalate their privileges on the affected system. Intel RST is widely deployed storage management software used across consumer and enterprise systems to improve disk performance and reliability through RAID configurations and caching features.

Critical Impact

Authenticated local attackers can exploit insecure permission inheritance to escalate privileges, potentially gaining full control over affected systems running vulnerable versions of Intel RST.

Affected Products

• Intel Rapid Storage Technology versions prior to 16.8.5.1014.9

Discovery Timeline

• 2023-11-14 - CVE-2023-39230 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2023-39230

Vulnerability Analysis

This vulnerability is classified under CWE-277 (Insecure Inherited Permissions) and CWE-732 (Incorrect Permission Assignment for Critical Resource). The flaw exists in how Intel RST software handles permission inheritance during installation or operation, resulting in improper access controls on critical resources.

When permissions are inherited insecurely, files, directories, or registry keys associated with the Intel RST installation may allow unauthorized modification by lower-privileged users. An authenticated attacker can leverage these misconfigurations to modify executable files, configuration data, or service components, ultimately achieving privilege escalation on the local system.

The vulnerability requires local access and an authenticated user account, meaning remote exploitation is not directly possible. However, in enterprise environments where multiple users share systems, or in scenarios where an attacker has established a foothold through other means, this vulnerability provides a reliable path to elevate privileges.

Root Cause

The root cause of CVE-2023-39230 lies in improper permission inheritance mechanisms within the Intel Rapid Storage Technology software installation and runtime components. When the software is installed or certain operations are performed, the permission inheritance model fails to restrict access appropriately, allowing child objects to inherit overly permissive access controls from parent containers.

This type of vulnerability commonly occurs when software installers do not explicitly set restrictive permissions on directories or files, instead relying on inherited permissions from parent directories that may have been modified or configured with broader access than intended.

Attack Vector

The attack vector for CVE-2023-39230 is local, requiring an authenticated user to have access to the target system. The exploitation process typically involves:

1. Reconnaissance - The attacker identifies installations of Intel RST software and locates directories or files with insecure inherited permissions
2. Permission Analysis - Using tools like icacls or Get-Acl, the attacker enumerates access control lists to identify modifiable resources
3. Payload Injection - The attacker modifies executable files, DLLs, or configuration files that are loaded by privileged processes
4. Privilege Execution - When the Intel RST service or associated privileged processes execute, the attacker's payload runs with elevated permissions

The exploitation does not require user interaction and can be executed with low attack complexity, as the permission misconfiguration creates a straightforward path to privilege escalation.

Detection Methods for CVE-2023-39230

Indicators of Compromise

• Unexpected modifications to files in Intel RST installation directories (typically C:\Program Files\Intel\Intel(R) Rapid Storage Technology)
• Changes to DLL files or executables associated with Intel RST services
• Suspicious processes spawning from Intel RST service context
• Audit log entries showing file permission changes on Intel RST directories

Detection Strategies

• Monitor Windows Security Event logs for permission changes (Event IDs 4670, 4656) targeting Intel RST directories
• Implement file integrity monitoring on Intel RST installation paths to detect unauthorized modifications
• Use endpoint detection to identify unusual privilege escalation patterns originating from Intel RST processes
• Deploy SentinelOne Singularity to detect and block anomalous process behavior and privilege escalation attempts

Monitoring Recommendations

• Enable advanced auditing on Intel RST installation directories to capture access and modification attempts
• Configure alerting for any process execution with elevated privileges originating from user-modified files in RST paths
• Regularly audit system permissions on software installation directories to identify inheritance misconfigurations

How to Mitigate CVE-2023-39230

Immediate Actions Required

• Update Intel Rapid Storage Technology to version 16.8.5.1014.9 or later immediately
• Audit current installations to verify the installed version using Windows Programs and Features or the Intel RST application
• Review and correct permissions on Intel RST installation directories to remove insecure inherited permissions
• Restrict local user access on systems where Intel RST is deployed until patching is complete

Patch Information

Intel has addressed this vulnerability in Intel Rapid Storage Technology version 16.8.5.1014.9 and later releases. The patch corrects the permission inheritance behavior to ensure proper access controls are applied to all software components.

Detailed information about this vulnerability and the official patch can be found in the Intel Security Advisory SA-00961.

Organizations should obtain the updated software through Intel's official download channels or their system manufacturer's support portal to ensure authenticity and integrity of the update.

Workarounds

• Manually restrict permissions on Intel RST installation directories using icacls to remove inherited permissions and apply explicit restrictive ACLs
• Limit local user account privileges on affected systems to reduce the attack surface
• Consider temporarily disabling Intel RST services on critical systems if they are not essential, until patching can be completed
• Implement application whitelisting to prevent unauthorized executables from running in Intel RST directories

# Example: Review and restrict permissions on Intel RST directory (Windows)
# Run in elevated Command Prompt

# Check current permissions
icacls "C:\Program Files\Intel\Intel(R) Rapid Storage Technology"

# Remove inherited permissions and apply restrictive ACLs
icacls "C:\Program Files\Intel\Intel(R) Rapid Storage Technology" /inheritance:d
icacls "C:\Program Files\Intel\Intel(R) Rapid Storage Technology" /remove:g "Users"
icacls "C:\Program Files\Intel\Intel(R) Rapid Storage Technology" /grant:r "Administrators:(OI)(CI)F"
icacls "C:\Program Files\Intel\Intel(R) Rapid Storage Technology" /grant:r "SYSTEM:(OI)(CI)F"