CVE-2024-38141

Use After Free (CWE-416)

Published: Aug 13, 2024

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

Summary

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. This is a local vulnerability with a low attack complexity that requires low privileges and no user interaction. It has high impacts on confidentiality, integrity, and availability.

Impact

This vulnerability could allow an attacker with low privileges to elevate their privileges on a target system. The high impact on confidentiality, integrity, and availability suggests that an attacker could potentially gain significant control over the affected system, access sensitive information, modify or delete data, and disrupt system operations. Given that it's a local attack vector, the attacker would need some form of prior access to the target system.

Exploitation

There is no evidence that a public proof-of-concept exists. Its exploitation has been reported by various sources, including tenable.com.

Patch

A patch is available. Microsoft released an official fix for this vulnerability on August 13, 2024.

Mitigation

1. Apply the official patch from Microsoft as soon as possible. 2. Limit local access to systems, ensuring that only trusted users have access. 3. Implement the principle of least privilege, giving users only the minimum necessary permissions. 4. Monitor systems for suspicious activities, especially attempts at privilege escalation. 5. Keep all Windows systems and software up to date with the latest security patches. 6. Use endpoint detection and response (EDR) solutions to detect and prevent exploitation attempts.

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
First Article

Feedly found the first article mentioning CVE-2024-38141. 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
CVE Assignment

NVD published the first details for CVE-2024-38141

Aug 13, 2024 at 6:15 PM
Exploitation in the Wild

Attacks in the wild have been reported by Tenable Blog. See article

Aug 13, 2024 at 7:15 PM / Tenable Blog
Threat Intelligence Report

CVE-2024-38141 is a critical EoP vulnerability in the Windows Ancillary Function Driver for Winsock, with a CVSSv3 score of 7.8. It has been reported as "Exploitation More Likely" and has been exploited in the wild as a zero-day vulnerability. There are currently no known proof-of-concept exploits, but users are advised to apply patches and follow recommended mitigations to prevent exploitation and potential downstream impacts to other third-party vendors or technologies. See article

Aug 13, 2024 at 7:15 PM
EPSS

EPSS Score was set to: 0.06% (Percentile: 26.7%)

Nov 19, 2024 at 4:14 PM
Static CVE Timeline Graph

Affected Systems

Microsoft/windows_11_24h2
+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 Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
The new Copilot+ devices that are now publicly available come with Windows 11, version 24H2 installed. What privileges could be gained by an attacker who successfully exploited this vulnerability?
August 2024 Patch Tuesday Highlights: 89 CVEs, 6 Zero-Day Vulnerabilities Under Exploitation
CVE-2024-38189 (CVSS: 8.8) : This vulnerability affects Microsoft Project, allowing RCE when a user opens a malicious file with security features like macro-blocking and notifications are disabled. August 2024 Patch Tuesday Highlights: 89 CVEs, 6 Zero-Day Vulnerabilities Under Exploitation
See 6 more references

News

The SOS Intelligence CVE Chatter Weekly Top Ten – 02 September 2024
SOS Intelligence gathers a list of the most discussed Common Vulnerabilities and Exposures (CVE) online for the previous week. Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability
28.852
Newly Added (1) TOTOLINK.A3600R.setIpQosRules.Buffer.Overflow Modified (27) Adobe.Acrobat.AcroPDF.DLL.Memory.Corruption Adobe.Acrobat.AcroForm.Field.Memory.Corruption Accellion.FTA.MPIPE2.Command.Execution Adobe.Acrobat.PDF417.Handling.Code.Execution Adobe.Acrobat.Triangle.Object.Memory.Corruption Adobe.Acrobat.CVE-2015-3053.Use.After.Free Adobe.Acrobat.CVE-2015-4447.Security.Bypass Adobe.Acrobat.CVE-2016-1050.Use.After.Free Adobe.Acrobat.CVE-2017-11263.Memory.Corruption Adobe.Acrobat.AcroForm.Image.Decoding.Out-of-Bounds.Write Adobe.Acrobat.AcroForm.Image.Handling.Out-of-Bounds.Write Adobe.Acrobat.EMF.CVE-2018-5030.Information.Disclosure D-Link.Devices.HNAP1.Command.Injection Adobe.Acrobat.JS.Field.Name.Out-of-Bounds.Read D-Link.Devices.HNAP.PrivateLogin.Authentication.Bypass Adobe.Commerce.Open.Source.Shipping.Policy.XSS Adobe.ColdFusion.CVE-2022-38419.Information.Disclosure Adobe.Commerce.Open.Source.Widget.Code.XXE Adobe.Commerce.Open.Source.Group.php.XSS MS.Windows.Kernel.CVE-2024-38106.Privilege.Elevation MS.Windows.Driver.CVE-2024-38141.Privilege.Elevation MS.Windows.Kernel.CVE-2024-38144.Privilege.Elevation MS.Windows.DWM.Core.CVE-2024-38150.Privilege.Elevation MS.Windows.Scripting.Engine.CVE-2024-38178.Memory.Corruption MS.Windows.ksthunk.sys.CVE-2024-38125.Privilege.Elevation MS.Windows.CLFS.Driver.CVE-2024-38196.Privilege.Elevation MS.Windows.Driver.CVE-2024-38193.Privilege.Elevation
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.
Patch Tuesday August 2024: 6 Zero-Day Vulnerabilities Under Active Exploitation, and Windows Downgrade Attacks
On top of Microsoft releasing fixes for an unusually high number of zero-days and vulnerabilities that are under Active Exploitation, there was also a demonstration of a new Downgrade Attack against Windows that was demonstrated at Black Hat 2024 and Def Con 32 —where an NTLM hash attack was also demonstrated. First demonstrated at Black Hat 2024 and Def Con 32, CVE-2024-21302 Windows Secure Kernel Mode Elevation of Privilege and CVE-2024-38202 are two of the zero-day vulnerabilities that exist in Windows systems that were leveraged by security researcher Alon Leviev with SafeBreach in their proof of concept for a Downgrade Attack with a tool named Windows Downdate.
See 41 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

Categories

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