- Are you ready for a brand new batch of important software updates?
- Well, Microsoft will release them today, as a part of Patch Tuesday.
- You can catch up on what the tech giant put out in the previous months.
- Also, learn what we can expect from the Redmond company in September.
September is here, and with it comes yet another batch of Patch Tuesday updates that many users have been eagerly waiting for.
As with all the other Patch Tuesday updates of previous months, these bring a host of changes, fixes, and improvements to all supported versions of the Windows OS.
Microsoft announced the presence of CVE-2021-40444 on Wednesday, a vulnerability that is reported both as Publicly Disclosed and Known Exploited.
This particular vulnerability allows for remote code execution via MSHTML, a component used by Internet Explorer and Office.
What can we expect from the September Patch Tuesday?
If you like to keep yourself up to date with everything that the Redmond-based tech company does during these Patch Tuesday events, you surely remember last month’s batch.
Pressed by serious security concerns, Microsoft released a huge number of security fixes, meant to sort out some exploits that were going on in the wild.
Redmond officials included a detailed workaround to disable the installation of all ActiveX controls in Internet Explorer which will mitigate this attack.
Watch for an update that addresses this vulnerability otherwise you will need to consider this mitigation to address the issue in the short term until a fix is released. The CVSS 3.0 score is 8.8.
The zero-day vulnerabilities that Microsoft has tracked as being actively exploited were patched in August 2021, as follows:
| Tag | CVE ID | CVE Title | Severity |
|---|---|---|---|
| .NET Core & Visual Studio | CVE-2021-34485 | .NET Core and Visual Studio Information Disclosure Vulnerability | Important |
| .NET Core & Visual Studio | CVE-2021-26423 | .NET Core and Visual Studio Denial of Service Vulnerability | Important |
| ASP.NET Core & Visual Studio | CVE-2021-34532 | ASP.NET Core and Visual Studio Information Disclosure Vulnerability | Important |
| Azure | CVE-2021-36943 | Azure CycleCloud Elevation of Privilege Vulnerability | Important |
| Azure | CVE-2021-33762 | Azure CycleCloud Elevation of Privilege Vulnerability | Important |
| Azure Sphere | CVE-2021-26428 | Azure Sphere Information Disclosure Vulnerability | Important |
| Azure Sphere | CVE-2021-26430 | Azure Sphere Denial of Service Vulnerability | Important |
| Azure Sphere | CVE-2021-26429 | Azure Sphere Elevation of Privilege Vulnerability | Important |
| Microsoft Azure Active Directory Connect | CVE-2021-36949 | Microsoft Azure Active Directory Connect Authentication Bypass Vulnerability | Important |
| Microsoft Dynamics | CVE-2021-36946 | Microsoft Dynamics Business Central Cross-site Scripting Vulnerability | Important |
| Microsoft Dynamics | CVE-2021-36950 | Microsoft Dynamics 365 (on-premises) Cross-site Scripting Vulnerability | Important |
| Microsoft Dynamics | CVE-2021-34524 | Microsoft Dynamics 365 (on-premises) Remote Code Execution Vulnerability | Important |
| Microsoft Edge (Chromium-based) | CVE-2021-30591 | Chromium: CVE-2021-30591 Use after free in File System API | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30592 | Chromium: CVE-2021-30592 Out of bounds write in Tab Groups | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30597 | Chromium: CVE-2021-30597 Use after free in Browser UI | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30594 | Chromium: CVE-2021-30594 Use after free in Page Info UI | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30596 | Chromium: CVE-2021-30596 Incorrect security UI in Navigation | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30590 | Chromium: CVE-2021-30590 Heap buffer overflow in Bookmarks | Unknown |
| Microsoft Edge (Chromium-based) | CVE-2021-30593 | Chromium: CVE-2021-30593 Out of bounds read in Tab Strip | Unknown |
| Microsoft Graphics Component | CVE-2021-34530 | Windows Graphics Component Remote Code Execution Vulnerability | Critical |
| Microsoft Graphics Component | CVE-2021-34533 | Windows Graphics Component Font Parsing Remote Code Execution Vulnerability | Important |
| Microsoft Office | CVE-2021-34478 | Microsoft Office Remote Code Execution Vulnerability | Important |
| Microsoft Office SharePoint | CVE-2021-36940 | Microsoft SharePoint Server Spoofing Vulnerability | Important |
| Microsoft Office Word | CVE-2021-36941 | Microsoft Word Remote Code Execution Vulnerability | Important |
| Microsoft Scripting Engine | CVE-2021-34480 | Scripting Engine Memory Corruption Vulnerability | Critical |
| Microsoft Windows Codecs Library | CVE-2021-36937 | Windows Media MPEG-4 Video Decoder Remote Code Execution Vulnerability | Important |
| Remote Desktop Client | CVE-2021-34535 | Remote Desktop Client Remote Code Execution Vulnerability | Critical |
| Windows Bluetooth Service | CVE-2021-34537 | Windows Bluetooth Driver Elevation of Privilege Vulnerability | Important |
| Windows Cryptographic Services | CVE-2021-36938 | Windows Cryptographic Primitives Library Information Disclosure Vulnerability | Important |
| Windows Defender | CVE-2021-34471 | Microsoft Windows Defender Elevation of Privilege Vulnerability | Important |
| Windows Event Tracing | CVE-2021-34486 | Windows Event Tracing Elevation of Privilege Vulnerability | Important |
| Windows Event Tracing | CVE-2021-34487 | Windows Event Tracing Elevation of Privilege Vulnerability | Important |
| Windows Event Tracing | CVE-2021-26425 | Windows Event Tracing Elevation of Privilege Vulnerability | Important |
| Windows Media | CVE-2021-36927 | Windows Digital TV Tuner device registration application Elevation of Privilege Vulnerability | Important |
| Windows MSHTML Platform | CVE-2021-34534 | Windows MSHTML Platform Remote Code Execution Vulnerability | Critical |
| Windows NTLM | CVE-2021-36942 | Windows LSA Spoofing Vulnerability | Important |
| Windows Print Spooler Components | CVE-2021-34483 | Windows Print Spooler Elevation of Privilege Vulnerability | Important |
| Windows Print Spooler Components | CVE-2021-36947 | Windows Print Spooler Remote Code Execution Vulnerability | Important |
| Windows Print Spooler Components | CVE-2021-36936 | Windows Print Spooler Remote Code Execution Vulnerability | Critical |
| Windows Services for NFS ONCRPC XDR Driver | CVE-2021-36933 | Windows Services for NFS ONCRPC XDR Driver Information Disclosure Vulnerability | Important |
| Windows Services for NFS ONCRPC XDR Driver | CVE-2021-26433 | Windows Services for NFS ONCRPC XDR Driver Information Disclosure Vulnerability | Important |
| Windows Services for NFS ONCRPC XDR Driver | CVE-2021-36932 | Windows Services for NFS ONCRPC XDR Driver Information Disclosure Vulnerability | Important |
| Windows Services for NFS ONCRPC XDR Driver | CVE-2021-26432 | Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability | Critical |
| Windows Services for NFS ONCRPC XDR Driver | CVE-2021-36926 | Windows Services for NFS ONCRPC XDR Driver Information Disclosure Vulnerability | Important |
| Windows Storage Spaces Controller | CVE-2021-34536 | Storage Spaces Controller Elevation of Privilege Vulnerability | Important |
| Windows TCP/IP | CVE-2021-26424 | Windows TCP/IP Remote Code Execution Vulnerability | Critical |
| Windows Update | CVE-2021-36948 | Windows Update Medic Service Elevation of Privilege Vulnerability | Important |
| Windows Update Assistant | CVE-2021-36945 | Windows 10 Update Assistant Elevation of Privilege Vulnerability | Important |
| Windows Update Assistant | CVE-2021-26431 | Windows Recovery Environment Agent Elevation of Privilege Vulnerability | Important |
| Windows User Profile Service | CVE-2021-34484 | Windows User Profile Service Elevation of Privilege Vulnerability | Important |
| Windows User Profile Service | CVE-2021-26426 | Windows User Account Profile Picture Elevation of Privilege Vulnerability | Important |
However, this month we can expect a limited number of CVEs addressed across all the operating systems as Microsoft comes back from final summer vacation.
We’re now past the halfway point for the Extended Security Updates (ESUs) for Windows 7 and Server 2008/2008 R2 so anyone running these operating systems should be working on an upgrade scheme.
Also, with CVE-2021-40444 announced, we should definitely see an Internet Explorer update.
If you were wondering about Adobe Acrobat and Reader, know that they will be updated, as Adobe provided a Prenotification Security Advisory APSB21-55.
So this should be a fairly easy September Patch Tuesday but enjoy it while it lasts because this is actually the calm before the storm.
As we know, software updates typically pick up in October and November prior to the end-of-year holidays and we also need to factor in adding support for the release of all these new operating systems.
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