CVE-2023-33172 is a medium-severity vulnerability classified as a Remote Procedure Call Runtime Denial of Service vulnerability. This vulnerability allows an attacker to cause a denial of service, severely impacting system availability. The CVSS score of 6.5 indicates that while the vulnerability is not critical, it poses a significant risk to systems that are not patched. Organizations using affected versions of Microsoft Windows should be particularly vigilant, as the potential disruption could have wide-ranging impacts on operations. Organizations should prioritize patching immediately.
The vulnerability was published on July 11, 2023, and affects multiple versions of Microsoft Windows, including Windows 10 (various editions) and Windows Server 2008 through 2022. The exploitability of this vulnerability is classified as medium, and it is critical for organizations to understand the urgency of applying mitigations.
Risk to organizations includes potential service outages and the inability to deliver essential services. The vulnerability is particularly concerning as it can be exploited remotely without requiring any user interaction, thereby increasing the likelihood of successful attacks. All organizations using the affected systems are advised to take immediate action.
The vulnerability is further detailed in the Microsoft Security Response Center, which provides patch information. Organizations must ensure they are running the latest versions of their software to mitigate this vulnerability effectively.
Vulnerability Details
The official description for CVE-2023-33172 states that it is a Remote Procedure Call Runtime Denial of Service vulnerability. The vulnerability has a CVSS score of 6.5, indicating a medium severity level. It affects various Microsoft Windows versions, including Windows 10 and Windows Server. The publication date of the vulnerability is July 11, 2023.
The vulnerability is classified under CWE-126, which relates to the improper handling of input that can lead to denial of service conditions. Organizations should focus on their deployment of Windows systems, especially those listed as vulnerable in the configurations.
Technical Analysis
The root cause of CVE-2023-33172 stems from how the Remote Procedure Call runtime processes requests. Attackers may leverage this vulnerability to send specially crafted requests that could overload the system, resulting in a denial of service. The attack vector is network-based, meaning no physical access to the system is required. The attack complexity is low, requiring minimal effort from the attacker, as no special privileges are necessary, and user interaction is not required.
The impact on confidentiality and integrity is none, but the availability impact is high, which signifies that systems may be rendered inoperable until the issue is resolved. Organizations must monitor system logs for any irregularities that could indicate exploitation attempts.
Risk & Impact Analysis
Organizations deploying affected Microsoft Windows systems face a significant risk from CVE-2023-33172. The vulnerability's ability to cause denial of service means that organizations could experience operational disruptions. The urgency for remediation is heightened by the availability of the exploit vector on the network, making it essential to address this vulnerability in the priority patch cycle.
The availability impact is particularly concerning as it could lead to downtime for critical services, affecting customer experience and potentially leading to financial losses. Organizations should assess their exposure and implement necessary patches promptly.
The exploitation status of this vulnerability is currently not known to be actively exploited, which provides an opportunity for organizations to remediate before any exploitation occurs.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The following versions of Microsoft Windows are affected by CVE-2023-33172:
1. Windows 10 1507 (versions before 10.0.10240.20048) 2. Windows 10 1607 (versions before 10.0.14393.6085) 3. Windows 10 1809 (versions before 10.0.17763.4645) 4. Windows 10 21H2 (versions before 10.0.19041.3208) 5. Windows 10 22H2 (versions before 10.0.19045.3208) 6. Windows 11 21H2 (versions before 10.0.22000.2176) 7. Windows 11 22H2 (versions before 10.0.22621.1992) 8. Windows Server 2008 9. Windows Server 2012 10. Windows Server 2016 11. Windows Server 2019 12. Windows Server 2022
Mitigation & Remediation
Organizations should prioritize patching immediately. Microsoft has released patches to remediate this vulnerability. For detailed patching information, refer to the Microsoft Security Response Center. Regularly updating systems and applying security patches are essential practices to maintain system security. Additionally, organizations should consider implementing network controls to monitor traffic and detect any anomalies that could indicate exploitation attempts.
For further guidance on security practices, organizations are encouraged to utilize resources on penetration testing and continuous monitoring.
Detection Guidance
Organizations should monitor system logs for unusual patterns of traffic, particularly around the usage of Remote Procedure Calls. Behavioral anomalies that deviate from expected patterns could indicate attempts to exploit this vulnerability. Implementing network signatures to detect exploit attempts can also be beneficial.
AppSecure Threat Intelligence Insight
CVE-2023-33172 highlights the ongoing challenges organizations face in securing remote procedure call interfaces. This vulnerability represents a trend where attackers continuously seek to exploit low-complexity vulnerabilities that can lead to significant service disruptions. Organizations should learn from this incident to enhance their security posture by implementing robust monitoring and response strategies.
For more insights on security practices, refer to the following resources: penetration testing methodology, vulnerability management program design, and cloud penetration testing resources.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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