CVE-2024-43633

Sensitive Data Storage in Improperly Locked Memory (CWE-591)

Published: Nov 12, 2024

010
CVSS 6.5EPSS 0.04%Medium
CVE info copied to clipboard

Summary

Windows Hyper-V Denial of Service Vulnerability. This vulnerability allows a local attacker with low privileges to cause a denial of service condition in Windows Hyper-V. The attack requires no user interaction and has a low attack complexity. While it does not impact confidentiality or integrity, it has a high impact on availability. The vulnerability affects the scope beyond the vulnerable component.

Impact

This vulnerability could allow an attacker to cause a denial of service condition in Windows Hyper-V. The impact is primarily on the availability of the system, potentially causing disruption to virtual machine operations or the entire Hyper-V environment. Given the "Changed" scope, the impact may extend beyond the Hyper-V component itself, potentially affecting other parts of the system or network. The high availability impact suggests that the attacker could potentially cause a complete shutdown or significant disruption of the Hyper-V service.

Exploitation

There is no evidence that a public proof-of-concept exists. There is no evidence of proof of exploitation at the moment.

Patch

A patch is available for this vulnerability. Microsoft released the patch on November 12, 2024.

Mitigation

1. Apply the security update provided by Microsoft as soon as possible. 2. Limit local access to Hyper-V hosts to trusted administrators only. 3. Implement the principle of least privilege for users who have access to Hyper-V environments. 4. Monitor Hyper-V systems for unusual activity or performance issues that could indicate exploitation attempts. 5. Ensure that all Windows systems, especially those running Hyper-V, are kept up to date with the latest security patches. 6. Consider implementing additional network segmentation to isolate Hyper-V environments from potential attack vectors.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C

Timeline

Detection in Vulnerability Scanners

Detection for the vulnerability has been added to Qualys (92186)

Nov 12, 2024 at 7:53 AM
CVSS

A CVSS base score of 6.5 has been assigned.

Nov 12, 2024 at 5:55 PM / microsoft
First Article

Feedly found the first article mentioning CVE-2024-43633. See article

Nov 12, 2024 at 6:00 PM / Microsoft Security Advisories - MSRC
CVSS Estimate

Feedly estimated the CVSS score as MEDIUM

Nov 12, 2024 at 6:01 PM
CVE Assignment

NVD published the first details for CVE-2024-43633

Nov 12, 2024 at 6:15 PM
EPSS

EPSS Score was set to: 0.04% (Percentile: 10.1%)

Nov 13, 2024 at 5:06 PM
EPSS

EPSS Score was set to: 0.04% (Percentile: 10.2%)

Nov 18, 2024 at 6:52 PM
Static CVE Timeline Graph

Affected Systems

Microsoft/windows_11_24h2
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Patches

Microsoft
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References

Windows Hyper-V Denial of Service Vulnerability
According to the CVSS metric, successful exploitation could lead to a scope change (S:C). An attacker who successfully exploited this vulnerability could potentially execute a cross-VM attack, thereby compromising multiple virtual machines and expanding the impact of the attack beyond the initially targeted VM.

News

2024-45 - Adobe, Mozilla, Canonical, Red Hat, Microsoft, Google, Jenkins, GitHub, Spring 🗂️
Advisory Week Week 45, 2024 National Cyber Awareness System CISA Releases Nineteen Industrial Control Systems Advisories CISA Adds Two Known Exploited Vulnerabilities to Catalog Palo Alto Networks Emphasizes Hardening Guidance Fortinet Releases Security Updates for Multiple Products Microsoft Releases November 2024 Security Updates Adobe Releases Security Updates for Multiple Products Ivanti Releases Security Updates for Multiple Products JCDC’s Collaborative Efforts Enhance Cybersecurity for the 2024 Olympic and Paralympic Games Citrix Releases Security Updates for NetScaler and Citrix Session Recording CISA Releases Five Industrial Control Systems Advisories CISA, FBI, NSA, and International Partners Release Joint Advisory on 2023 Top Routinely Exploited Vulnerabilities CISA Adds Five Known Exploited Vulnerabilities to Catalog Adobe Security Bulletins and Advisories Security updates available for Adobe Photoshop APSB24-89 Security Updates Available for Adobe Commerce APSB24-90 Security Updates Available for Adobe Illustrator APSB24-66 APSB24-87 Security Update Available for Adobe InDesign APSB24-88 Security Updates Available for Adobe Bridge APSB24-77 Security Updates Available for Adobe Audition APSB24-83 Mozilla Security Advisories Security Vulnerabilities fixed in Thunderbird 132.0.1 mfsa2024-62 Security Vulnerabilities fixed in Thunderbird 128.4.3 mfsa2024-61 Ubuntu Security Notices Linux kernel vulnerabilities: USN-7089-6 / USN-7088-5 / USN-7089-5 / USN-7110-1 / USN-7089-4 / USN-7100-2 / USN-7100-1 GD Graphics Library vulnerability: USN-7112-1 Go vulnerabilities: USN-7111-1 / USN-7109-1 Linux kernel vulnerability:
Microsoft’s Security Update in November on High-Risk Vulnerabilities in Multiple Products
On November 13, NSFOCUS CERT detected that Microsoft released a security update patch for November, which fixed 89 security issues, including Windows, Microsoft SQL Server, Microsoft Office, Azure, Open Source Software, Microsoft Visual Studio, System Center and other widely used products, including high-risk vulnerabilities such as privilege escalation vulnerability and remote code execution vulnerability. Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
1.771
Atlassian Confluence Server CVE-2023-22505 Remote Code Execution Vulnerability Atlassian Confluence Server CVE-2023-22508 Remote Code Execution Vulnerability
Patch Tuesday November 2024 - 3 Zero Days!
So, without further ado, here’s the chart of MS patches that affect Windows platforms in the past month. Of this months patches only 8 are critical and 88 important.
November Patch Tuesday loads up everyone’s plate – Sophos News
We are as always including at the end of this post additional appendices listing all Microsoft’s patches, sorted by severity, by predicted exploitability, and by product family. This Important-severity spoofing vulnerability, which Microsoft believes to be more likely to be exploited within the next 30 days, has a rather specific set of post-installation instructions, which can be seen on the company’s site.
See 27 more articles and social media posts

CVSS V3.1

Attack Vector:Local
Attack Complexity:Low
Privileges Required:Low
User Interaction:None
Scope:Changed
Confidentiality:None
Integrity:None
Availability Impact:High

Categories

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