CVE-2024-38064 Overview
CVE-2024-38064 is a Windows TCP/IP Information Disclosure Vulnerability affecting the core networking stack across a wide range of Microsoft Windows operating systems. This vulnerability allows an unauthenticated remote attacker to potentially access sensitive information from affected systems through the TCP/IP networking component without requiring any user interaction.
Critical Impact
This network-accessible vulnerability can be exploited without authentication to disclose potentially sensitive system information, with an EPSS score of 14.538% placing it in the 94th percentile for exploitation likelihood.
Affected Products
- Microsoft Windows 10 (versions 1507, 1607, 1809, 21H2, 22H2)
- Microsoft Windows 11 (versions 21H2, 22H2, 23H2)
- Microsoft Windows Server 2008 SP2 and R2 SP1
- Microsoft Windows Server 2012 and R2
- Microsoft Windows Server 2016
- Microsoft Windows Server 2019
- Microsoft Windows Server 2022 and 23H2
Discovery Timeline
- July 9, 2024 - CVE-2024-38064 published to NVD
- November 21, 2024 - Last updated in NVD database
Technical Details for CVE-2024-38064
Vulnerability Analysis
This vulnerability exists within the Windows TCP/IP stack, a fundamental component responsible for network communications in all affected Microsoft Windows operating systems. The flaw allows remote attackers to extract information from vulnerable systems without requiring authentication or user interaction, making it particularly dangerous in network-exposed environments.
The vulnerability is classified under CWE-908 (Use of Uninitialized Resource), indicating that the TCP/IP stack may improperly handle memory that has not been properly initialized. When exploited, this could lead to the disclosure of memory contents that may contain sensitive information such as memory addresses, internal system state, or other data that could aid further attacks.
Given the network attack vector with no prerequisites for exploitation, this vulnerability is particularly concerning for internet-facing Windows systems and internal network environments where lateral movement is a concern.
Root Cause
The root cause of CVE-2024-38064 stems from the use of uninitialized memory resources (CWE-908) within the Windows TCP/IP networking implementation. When processing certain network traffic, the affected component may reference memory locations that have not been properly initialized, potentially exposing the contents of that memory to remote attackers.
This type of vulnerability typically occurs when:
- Memory buffers are allocated but not cleared before use
- Network response packets inadvertently include uninitialized memory contents
- Error handling paths fail to sanitize data before transmission
Attack Vector
The attack vector for this vulnerability is network-based, meaning exploitation can occur remotely over a network connection. An attacker can exploit this vulnerability by sending specially crafted network packets to a vulnerable Windows system. The attack requires:
- Network connectivity to the target system
- No authentication credentials
- No user interaction on the target system
The vulnerability mechanism involves the TCP/IP stack processing malformed or specific network requests in a way that causes uninitialized memory to be included in network responses. This information leakage could potentially reveal memory layout information useful for bypassing security mitigations like Address Space Layout Randomization (ASLR), or expose other sensitive data residing in memory.
For technical details on exploitation, refer to the Microsoft Security Update Guide.
Detection Methods for CVE-2024-38064
Indicators of Compromise
- Unusual network traffic patterns or unexpected responses from the TCP/IP stack
- Anomalous outbound network traffic containing potentially sensitive memory contents
- Network protocol anomalies in TCP/IP communications that deviate from normal system behavior
- Evidence of reconnaissance activity targeting Windows networking services
Detection Strategies
- Deploy network intrusion detection systems (NIDS) to monitor for anomalous TCP/IP traffic patterns
- Implement endpoint detection and response (EDR) solutions to identify suspicious network stack behavior
- Enable Windows Security event logging for network-related events and anomalies
- Monitor for patch compliance across all Windows systems to identify unpatched vulnerable hosts
Monitoring Recommendations
- Configure SIEM rules to correlate network anomalies with potentially vulnerable Windows hosts
- Establish baseline network behavior for Windows systems to detect deviations
- Monitor Microsoft Security Response Center feeds for updated guidance on CVE-2024-38064
- Track asset inventory to ensure all affected Windows versions are identified and prioritized for patching
How to Mitigate CVE-2024-38064
Immediate Actions Required
- Apply the Microsoft security update released in July 2024 to all affected systems immediately
- Prioritize patching internet-facing and network-exposed Windows systems
- Implement network segmentation to limit exposure of vulnerable systems
- Review firewall rules to restrict unnecessary network access to Windows systems
Patch Information
Microsoft has released security updates addressing CVE-2024-38064 as part of their July 2024 security update cycle. Detailed patch information and download links are available through the Microsoft Security Update Guide for CVE-2024-38064.
Organizations should apply the appropriate updates based on their Windows version:
- Windows 10 and 11 desktop systems receive updates through Windows Update
- Windows Server systems should be updated via Windows Server Update Services (WSUS) or direct download
- Extended Security Update (ESU) subscribers should verify patch availability for legacy systems like Windows Server 2008
Workarounds
- Implement strict network access controls to limit exposure of vulnerable systems
- Deploy host-based firewalls to restrict inbound network connections to essential services only
- Consider network isolation for critical systems until patches can be applied
- Monitor network traffic for exploitation attempts using intrusion detection systems
# Windows Firewall configuration to restrict TCP/IP exposure
# Run in elevated PowerShell to create restrictive inbound rules
# Block all inbound connections except explicitly allowed
netsh advfirewall set allprofiles firewallpolicy blockinbound,allowoutbound
# Verify current firewall status
netsh advfirewall show allprofiles state
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
