CVE-2024-38146

NULL Pointer Dereference (CWE-476)

Published: Aug 13, 2024

010
CVSS 7.5EPSS 0.05%High
CVE info copied to clipboard

Summary

Windows Layer-2 Bridge Network Driver is vulnerable to a Denial of Service attack. This vulnerability is caused by a NULL Pointer Dereference issue in the affected systems.

Impact

An attacker could exploit this vulnerability to cause a denial of service condition, potentially causing the affected Windows system to become unresponsive or crash. This could lead to temporary loss of service availability for users and systems relying on the affected Windows installations.

Exploitation

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

Patch

Patches are available. Microsoft has released updates to address this vulnerability for all affected Windows versions.

Mitigation

1. Apply the latest security updates provided by Microsoft for the affected Windows versions. 2. Prioritize patching based on the criticality of the systems and their exposure to potential attacks. 3. Monitor systems for any signs of exploitation or unusual behavior. 4. If immediate patching is not possible, consider implementing network segmentation to limit potential attack vectors. 5. Ensure that only trusted traffic is allowed to interact with the Layer-2 Bridge Network Driver.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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 (92160)

Aug 13, 2024 at 7:53 AM
CVSS

A CVSS base score of 7.5 has been assigned.

Aug 13, 2024 at 5:35 PM / microsoft
First Article

Feedly found the first article mentioning CVE-2024-38146. See article

Aug 13, 2024 at 5:37 PM / Microsoft Security Advisories - MSRC
CVSS Estimate

Feedly estimated the CVSS score as MEDIUM

Aug 13, 2024 at 5:37 PM
CVSS Estimate

Feedly estimated the CVSS score as HIGH

Aug 13, 2024 at 6:05 PM
CVE Assignment

NVD published the first details for CVE-2024-38146

Aug 13, 2024 at 6:15 PM
EPSS

EPSS Score was set to: 0.33% (Percentile: 71.8%)

Nov 19, 2024 at 4:17 PM
Static CVE Timeline Graph

Affected Systems

Microsoft/windows_10_1607
+null more

Patches

Microsoft
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References

Microsoft August 2024 Security Updates
Classification: Critical, Solution: Official Fix, Exploit Maturity: High, CVSSv3.1: 9.8, CVEs: CVE-2024-21302, CVE-2024-29995, CVE-2024-37968, CVE-2024-38063, CVE-2024-38084, CVE-2024-38098, CVE-2024-38106, CVE-2024-38107, CVE-2024-38108, CVE-2024-38109, CVE-2024-38114, CVE-2024-38115, CVE-2024-38116, CVE-2024-38117, CVE-2024-38118, CVE-2024-38120, CVE-2024-38121, CVE-2024-38122, CVE-2024-38123, CVE-2024-38125 (+82 other associated CVEs), Summary: https://www.bleepingcomputer.com/news/microsoft/microsoft-august-2024-patch-tuesday-fixes-9-zero-days-6-exploited/ Today is Microsoft's August 2024 Patch Tuesday, which includes security updates for 89 flaws, including six actively exploited and three publicly disclosed zero-days. Microsoft is still working on an update for a tenth publicly disclosed zero-day. This Patch Tuesday fixed eight critical vulnerabilities, which were a mixture of elevation of privileges, remote code execution, and information disclosure. The number of bugs in each vulnerability category is listed below:
Windows Layer-2 Bridge Network Driver Denial of Service Vulnerability
The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. Windows Server 2012 R2 (Server Core installation)
VERT Threat Alert: August 2024 Patch Tuesday Analysis
While updates for CVE-2024-38200 were released as part of the August Patch Tuesday drop, Microsoft had already enabled a fix for this issue on July 30, meaning that all users of supported versions of Office were protected. This vulnerability, a privilege escalation in the Windows Kernel, requires that the attacker win a race condition to successfully exploit it.

News

Microsoft’s September 2024 Patch Tuesday Update Fixes 79 Vulnerabilities
Microsoft addressed 79 vulnerabilities in September 2024 Patch Tuesday, with 7 critical flaws in components like Windows, Office, and SharePoint. Microsoft released yesterday the September 2024 Patch Tuesday updates for all supported versions of Windows 10 and Windows 11.
CNNVD | 关于微软多个安全漏洞的通报
近日,微软官方发布了多个安全漏洞的公告,其中微软产品本身漏洞84个,影响到微软产品的其他厂商漏洞5个。
Microsoft’s August Security Update on High-Risk Vulnerabilities in Multiple Products - Security Boulevard
On August 14, NSFOCUS CERT detected that Microsoft released a security update patch for August, which fixed 90 security issues involving widely used products such as Windows, Microsoft Office, Visual Studio and Azure, including high-risk vulnerabilities such as privilege escalation and remote code execution. Due to an error in the Windows Power Dependency Coordinator after release, local attackers authenticated by ordinary users can exploit this vulnerability by running special programs to obtain SYSTEM permissions of the target system.
CNNVD关于微软多个安全漏洞的通报
近日,微软官方发布了多个安全漏洞的公告,其中微软产品本身漏洞84个,影响到微软产品的其他厂商漏洞5个。
August Patch Tuesday goes big – Sophos News
(It should be noted that one issue patched in June, CVE-2024-38213, is under active attack in the wild – a good argument for applying patches as soon as possible after release.) Microsoft also took pains this month to flag three other CVEs for which fixes have already gone out, but that are included in Patch Tuesday information for transparency’s sake; we list those in Appendix D as well. However, with over two dozen advisories, a number of “informational” notices concerning material released in June and July, two high-profile issues for which the fixes are still a work in progress, and over 85 Linux-related CVEs covered in the release, administrators may find their patch prioritization especially complex this month.
See 26 more articles and social media posts

CVSS V3.1

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

Categories

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