Microsoft September 2023 Patch Tuesday fixes 2 zero-days, 59 flaws

 

Today is Microsoft’s September 2023 Patch Tuesday, with security updates for 59 flaws, including two actively exploited zero-day vulnerabilities.

Microsoft also shared fixes for two flaws in non-Microsoft products, Electron and Autodesk, and four Microsoft Edge (Chromium) vulnerabilities on September 7th.

To learn more about the non-security updates released today, you can review our dedicated articles on the new Windows 11 KB5030219 cumulative update and Windows 10 KB5030211 updates released.

Two actively exploited vulnerabilities

This month’s Patch Tuesday fixes two zero-day vulnerabilities, with both exploited in attacks and one of them publicly disclosed.

Microsoft classifies a vulnerability as a zero-day if it is publicly disclosed or actively exploited with no official fix available.

The two actively exploited zero-day vulnerabilities in today’s updates are:

CVE-2023-36802 – Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

Microsoft has fixed an actively exploited local privilege elevation vulnerability that allows attackers to gain SYSTEM privileges.

The flaw was discovered by Quan Jin(@jq0904) & ze0r with DBAPPSecurity WeBin LabValentina Palmiotti with IBM X-Force, Microsoft Threat Intelligence, and Microsoft Security Response Center.

CVE-2023-36761 – Microsoft Word Information Disclosure Vulnerability

Microsoft has fixed an actively exploited vulnerability that can be used to steal NTLM hashes when opening a document, including in the preview pane.

These NTLM hashes can be cracked or used in NTLM Relay attacks to gain access to the account.

This flaw was discovered internally by the Microsoft Threat Intelligence group.

Recent updates from other companies

Other vendors who released updates or advisories in September 2023 include:

The September 2023 Patch Tuesday Security Updates

Below is the complete list of resolved vulnerabilities in the September 2023 Patch Tuesday updates.

To access the full description of each vulnerability and the systems it affects, you can view the full report here.

Tag CVE ID CVE Title Severity
.NET and Visual Studio CVE-2023-36794 Visual Studio Remote Code Execution Vulnerability Important
.NET and Visual Studio CVE-2023-36796 Visual Studio Remote Code Execution Vulnerability Critical
.NET and Visual Studio CVE-2023-36792 Visual Studio Remote Code Execution Vulnerability Critical
.NET and Visual Studio CVE-2023-36793 Visual Studio Remote Code Execution Vulnerability Critical
.NET Core & Visual Studio CVE-2023-36799 .NET Core and Visual Studio Denial of Service Vulnerability Important
.NET Framework CVE-2023-36788 .NET Framework Remote Code Execution Vulnerability Important
3D Builder CVE-2023-36772 3D Builder Remote Code Execution Vulnerability Important
3D Builder CVE-2023-36771 3D Builder Remote Code Execution Vulnerability Important
3D Builder CVE-2023-36770 3D Builder Remote Code Execution Vulnerability Important
3D Builder CVE-2023-36773 3D Builder Remote Code Execution Vulnerability Important
3D Viewer CVE-2022-41303 AutoDesk: CVE-2022-41303 use-after-free vulnerability in Autodesk® FBX® SDK 2020 or prior Important
3D Viewer CVE-2023-36760 3D Viewer Remote Code Execution Vulnerability Important
3D Viewer CVE-2023-36740 3D Viewer Remote Code Execution Vulnerability Important
3D Viewer CVE-2023-36739 3D Viewer Remote Code Execution Vulnerability Important
Azure DevOps CVE-2023-33136 Azure DevOps Server Remote Code Execution Vulnerability Important
Azure DevOps CVE-2023-38155 Azure DevOps Server Remote Code Execution Vulnerability Important
Azure HDInsights CVE-2023-38156 Azure HDInsight Apache Ambari Elevation of Privilege Vulnerability Important
Microsoft Azure Kubernetes Service CVE-2023-29332 Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability Critical
Microsoft Dynamics CVE-2023-38164 Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability Important
Microsoft Dynamics CVE-2023-36886 Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability Important
Microsoft Dynamics Finance & Operations CVE-2023-36800 Dynamics Finance and Operations Cross-site Scripting Vulnerability Important
Microsoft Edge (Chromium-based) CVE-2023-4863 Chromium: CVE-2023-4863 Heap buffer overflow in WebP Unknown
Microsoft Edge (Chromium-based) CVE-2023-4763 Chromium: CVE-2023-4763 Use after free in Networks Unknown
Microsoft Edge (Chromium-based) CVE-2023-4761 Chromium: CVE-2023-4761 Out of bounds memory access in FedCM Unknown
Microsoft Edge (Chromium-based) CVE-2023-4764 Chromium: CVE-2023-4764 Incorrect security UI in BFCache Unknown
Microsoft Edge (Chromium-based) CVE-2023-4762 Chromium: CVE-2023-4762 Type Confusion in V8 Unknown
Microsoft Exchange Server CVE-2023-36744 Microsoft Exchange Server Remote Code Execution Vulnerability Important
Microsoft Exchange Server CVE-2023-36756 Microsoft Exchange Server Remote Code Execution Vulnerability Important
Microsoft Exchange Server CVE-2023-36745 Microsoft Exchange Server Remote Code Execution Vulnerability Important
Microsoft Exchange Server CVE-2023-36777 Microsoft Exchange Server Information Disclosure Vulnerability Important
Microsoft Exchange Server CVE-2023-36757 Microsoft Exchange Server Spoofing Vulnerability Important
Microsoft Identity Linux Broker CVE-2023-36736 Microsoft Identity Linux Broker Remote Code Execution Vulnerability Important
Microsoft Office CVE-2023-36767 Microsoft Office Security Feature Bypass Vulnerability Important
Microsoft Office CVE-2023-36765 Microsoft Office Elevation of Privilege Vulnerability Important
Microsoft Office CVE-2023-41764 Microsoft Office Spoofing Vulnerability Moderate
Microsoft Office Excel CVE-2023-36766 Microsoft Excel Information Disclosure Vulnerability Important
Microsoft Office Outlook CVE-2023-36763 Microsoft Outlook Information Disclosure Vulnerability Important
Microsoft Office SharePoint CVE-2023-36764 Microsoft SharePoint Server Elevation of Privilege Vulnerability Important
Microsoft Office Word CVE-2023-36761 Microsoft Word Information Disclosure Vulnerability Important
Microsoft Office Word CVE-2023-36762 Microsoft Word Remote Code Execution Vulnerability Important
Microsoft Streaming Service CVE-2023-36802 Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability Important
Microsoft Windows Codecs Library CVE-2023-38147 Windows Miracast Wireless Display Remote Code Execution Vulnerability Important
Visual Studio CVE-2023-36758 Visual Studio Elevation of Privilege Vulnerability Important
Visual Studio CVE-2023-36759 Visual Studio Elevation of Privilege Vulnerability Important
Visual Studio Code CVE-2023-36742 Visual Studio Code Remote Code Execution Vulnerability Important
Visual Studio Code CVE-2023-39956 Electron: CVE-2023-39956 -Visual Studio Code Remote Code Execution Vulnerability Important
Windows Cloud Files Mini Filter Driver CVE-2023-35355 Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability Important
Windows Common Log File System Driver CVE-2023-38143 Windows Common Log File System Driver Elevation of Privilege Vulnerability Important
Windows Common Log File System Driver CVE-2023-38144 Windows Common Log File System Driver Elevation of Privilege Vulnerability Important
Windows Defender CVE-2023-38163 Windows Defender Attack Surface Reduction Security Feature Bypass Important
Windows DHCP Server CVE-2023-38152 DHCP Server Service Information Disclosure Vulnerability Important
Windows DHCP Server CVE-2023-38162 DHCP Server Service Denial of Service Vulnerability Important
Windows DHCP Server CVE-2023-36801 DHCP Server Service Information Disclosure Vulnerability Important
Windows GDI CVE-2023-36804 Windows GDI Elevation of Privilege Vulnerability Important
Windows GDI CVE-2023-38161 Windows GDI Elevation of Privilege Vulnerability Important
Windows Internet Connection Sharing (ICS) CVE-2023-38148 Internet Connection Sharing (ICS) Remote Code Execution Vulnerability Critical
Windows Kernel CVE-2023-38141 Windows Kernel Elevation of Privilege Vulnerability Important
Windows Kernel CVE-2023-38142 Windows Kernel Elevation of Privilege Vulnerability Important
Windows Kernel CVE-2023-38139 Windows Kernel Elevation of Privilege Vulnerability Important
Windows Kernel CVE-2023-38140 Windows Kernel Information Disclosure Vulnerability Important
Windows Kernel CVE-2023-38150 Windows Kernel Elevation of Privilege Vulnerability Important
Windows Kernel CVE-2023-36803 Windows Kernel Information Disclosure Vulnerability Important
Windows Scripting CVE-2023-36805 Windows MSHTML Platform Security Feature Bypass Vulnerability Important
Windows TCP/IP CVE-2023-38160 Windows TCP/IP Information Disclosure Vulnerability Important
Windows TCP/IP CVE-2023-38149 Windows TCP/IP Denial of Service Vulnerability Important
Windows Themes CVE-2023-38146 Windows Themes Remote Code Execution Vulnerability Important

Source: BleepingComputer