CVE-2024-30068: Windows 10 1507 Privilege Escalation Flaw

CVE-2024-30068 Overview

CVE-2024-30068 is a Windows Kernel Elevation of Privilege Vulnerability that enables local attackers with low-level access to escalate their privileges on affected Windows systems. This vulnerability resides in the Windows kernel and is classified as an Out-of-Bounds Read (CWE-125) issue, which can be leveraged to gain elevated privileges and potentially compromise the entire system.

Critical Impact

A successful exploit allows attackers with local access and low privileges to escalate to higher privilege levels, potentially gaining SYSTEM-level access. The vulnerability affects confidentiality, integrity, and availability with the ability to impact resources beyond the vulnerable component's security scope.

Affected Products

• Microsoft Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2)
• Microsoft Windows 11 (versions 21H2, 22H2, 23H2)
• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Microsoft Windows Server 2022
• Microsoft Windows Server 2022 23H2

Discovery Timeline

• June 11, 2024 - CVE-2024-30068 published to NVD
• November 21, 2024 - Last updated in NVD database

Technical Details for CVE-2024-30068

Vulnerability Analysis

This Windows Kernel vulnerability stems from an Out-of-Bounds Read condition (CWE-125) within kernel-mode processing routines. When exploited, an attacker who has already gained initial access to a system with low-level privileges can leverage this flaw to read memory beyond the intended buffer boundaries. This memory disclosure can be chained with other techniques to achieve privilege escalation from a standard user context to SYSTEM-level privileges.

The vulnerability requires local access to the target machine, meaning an attacker must first establish a foothold on the system through another vector such as phishing, malware delivery, or exploitation of a separate initial access vulnerability. Once local access is achieved, the attacker can exploit this kernel flaw without any user interaction required.

Root Cause

The root cause of CVE-2024-30068 is an Out-of-Bounds Read vulnerability (CWE-125) in the Windows kernel. This type of vulnerability occurs when the kernel reads data past the end or before the beginning of an intended buffer. In this case, the improper bounds checking allows memory contents to be accessed beyond the allocated boundaries, which can disclose sensitive kernel memory information that aids in privilege escalation attacks.

Attack Vector

The attack vector for CVE-2024-30068 is local, requiring an attacker to have pre-existing access to the vulnerable Windows system. The exploitation flow typically follows this pattern:

1. The attacker establishes a local session on a vulnerable Windows system with standard user privileges
2. The attacker triggers the out-of-bounds read condition in the kernel through a crafted system call or kernel object manipulation
3. Sensitive kernel memory information is leaked, potentially including kernel addresses or security tokens
4. The attacker leverages this information to escalate privileges to SYSTEM level
5. With elevated privileges, the attacker can then execute arbitrary code, install persistent backdoors, or move laterally across the network

The vulnerability does not require user interaction and can be exploited with low attack complexity once local access is achieved.

Detection Methods for CVE-2024-30068

Indicators of Compromise

• Unusual processes running with elevated SYSTEM privileges that originated from low-privilege user sessions
• Suspicious kernel-mode exceptions or crash dumps indicating memory access violations
• Evidence of privilege escalation attempts in Windows Security Event logs (Event ID 4672, 4673)
• Anomalous process creation patterns where child processes have higher privileges than parent processes

Detection Strategies

• Monitor for processes attempting to access kernel memory regions through suspicious system calls
• Implement endpoint detection rules to identify common privilege escalation techniques such as token manipulation
• Enable Windows Exploit Protection and monitor for blocked exploitation attempts
• Use behavioral analysis to detect anomalous process privilege changes

Monitoring Recommendations

• Enable Windows Security auditing for privilege use (Success and Failure) to track privilege escalation attempts
• Configure Windows Event Forwarding to centralize security logs from all Windows endpoints
• Implement real-time monitoring with SentinelOne to detect kernel exploitation attempts and privilege escalation
• Deploy application whitelisting to prevent unauthorized code execution following a privilege escalation

How to Mitigate CVE-2024-30068

Immediate Actions Required

• Apply the latest Microsoft security updates from the June 2024 Patch Tuesday release immediately
• Prioritize patching for systems that are internet-facing or handle sensitive data
• Review network segmentation to limit lateral movement potential if exploitation occurs
• Ensure endpoint protection solutions like SentinelOne are updated with the latest detection signatures

Patch Information

Microsoft has released security patches addressing CVE-2024-30068 as part of their June 2024 security update cycle. Administrators should consult the Microsoft Security Update Guide for CVE-2024-30068 for specific KB articles and patch versions applicable to their Windows deployments. The patches should be applied through Windows Update, Windows Server Update Services (WSUS), or Microsoft Endpoint Configuration Manager depending on your organization's patch management infrastructure.

Workarounds

• Implement the principle of least privilege to minimize the number of users with local system access
• Enable Credential Guard on Windows 10 and Windows 11 systems to protect against token theft
• Use Windows Defender Application Control (WDAC) to restrict which applications can run on endpoints
• Segment critical systems and limit remote access to reduce the attack surface for local exploitation

# Verify Windows security update installation status
wmic qfe list brief | findstr /i "KB5039211 KB5039212 KB5039213"

# Check Windows Defender Exploit Protection status
powershell Get-ProcessMitigation -System

# Enable audit policy for privilege use monitoring
auditpol /set /category:"Privilege Use" /success:enable /failure:enable