CVE-2024-38135

Buffer Over-read (CWE-126)

Published: Aug 13, 2024

010
CVSS 7.8EPSS 0.04%High
CVE info copied to clipboard

Summary

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability. This is a buffer over-read vulnerability that could allow an attacker to gain elevated privileges on affected Windows systems. The vulnerability has a CVSS v3.1 base score of 7.8, indicating a high severity.

Impact

An attacker who successfully exploits this vulnerability could gain elevated privileges on the affected system. This could allow the attacker to execute arbitrary code with higher privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability, all rated as HIGH impact. Given that it's a local attack vector with low attack complexity and requires low privileges, it poses a significant risk to system security if exploited.

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. Microsoft has released updates to address this vulnerability. The patch was added on August 13, 2024, and is available through the Microsoft Update Guide.

Mitigation

1. Apply the security updates provided by Microsoft as soon as possible. 2. Prioritize patching for the following affected Windows versions: - Windows Server 2022 23H2 (versions prior to 10.0.25398.1085) - Windows 11 23H2 (versions prior to 10.0.22631.4037) - Windows 11 24H2 (versions prior to 10.0.26100.1457) - Windows 11 22H2 (versions prior to 10.0.22621.4037) 3. Implement the principle of least privilege to minimize the potential impact of exploitation. 4. Monitor systems for suspicious activities, especially attempts to elevate privileges. 5. Keep all Windows systems and software up to date with the latest security patches. 6. Consider restricting access to the Resilient File System (ReFS) where it's not necessary for operations.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 7.8 has been assigned.

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

Feedly found the first article mentioning CVE-2024-38135. 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 5:38 PM
CVE Assignment

NVD published the first details for CVE-2024-38135

Aug 13, 2024 at 6:15 PM
EPSS

EPSS Score was set to: 0.05% (Percentile: 19%)

Nov 19, 2024 at 4:09 PM
Static CVE Timeline Graph

Affected Systems

Microsoft/windows_11_23h2
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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 Resilient File System (ReFS) Elevation of Privilege Vulnerability
The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. Why are there updates for this version of Windows listed in the Security Updates table?
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

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.
August Patch Tuesday goes big
(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 24 more articles and social media posts

CVSS V3.1

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

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