Loading...
Blogs & Stories

SpiderLabs Blog

Attracting more than a half-million annual readers, this is the security community's go-to destination for technical breakdowns of the latest threats, critical vulnerability disclosures and cutting-edge research.

Patch Tuesday, February 2021

February is here and with it comes a relatively light Patch Tuesday. Only 56 CVEs are being patched today. That includes eleven rated as "Critical", 42 rated as "Important", and three rated "Moderate". On the list of vulnerabilities rated as "Critical", you'll find vulnerabilities in .NET, various media codecs, Windows DNS and Fax services, and two in the Windows TCP/IP stack.

The list of "Important" CVEs includes Remote Code Execution vulnerabilities in MS Excel, Sharepoint, and Visual Studio as well as dozens of Privilege Escalation and Denial of Service vulnerabilities. All told, seven of these vulnerabilities have been exploited in the wild as a zero-day in very targeted attacks. This includes a Remote Code Execution vulnerability in .NET Core/Visual Studio. This makes this patch cycle even more crucial than ever.

Patch as early as you can and please stay safe!


Critical

.NET Core and Visual Studio Remote Code Execution Vulnerability
CVE-2021-26701
Remote Code Execution

.NET Core for Linux Remote Code Execution Vulnerability
CVE-2021-24112
Remote Code Execution

Microsoft Windows Codecs Library Remote Code Execution Vulnerability
CVE-2021-24081
Remote Code Execution

Windows Camera Codec Pack Remote Code Execution Vulnerability
CVE-2021-24091
Remote Code Execution

Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-24078
Remote Code Execution

Windows Fax Service Remote Code Execution Vulnerability
CVE-2021-1722, CVE-2021-24077
Remote Code Execution

Windows Graphics Component Remote Code Execution Vulnerability
CVE-2021-24093
Remote Code Execution

Windows Local Spooler Remote Code Execution Vulnerability
CVE-2021-24088
Remote Code Execution

Windows TCP/IP Remote Code Execution Vulnerability
CVE-2021-24074, CVE-2021-24094
Remote Code Execution


Important

.NET Core and Visual Studio Denial of Service Vulnerability
CVE-2021-1721
Denial of Service

Azure IoT CLI extension Elevation of Privilege Vulnerability
CVE-2021-24087
Defense in Depth

Microsoft Dataverse Information Disclosure Vulnerability
CVE-2021-24101
Information Disclosure

Microsoft Defender Elevation of Privilege Vulnerability
CVE-2021-24092
Elevation of Privilege

Microsoft Dynamics Business Central Cross-site Scripting Vulnerability
CVE-2021-1724
Spoofing

Microsoft Edge for Android Information Disclosure Vulnerability
CVE-2021-24100
Information Disclosure

Microsoft Excel Remote Code Execution Vulnerability
CVE-2021-24067, CVE-2021-24068, CVE-2021-24069, CVE-2021-24070
Remote Code Execution

Microsoft Exchange Server Spoofing Vulnerability
CVE-2021-1730, CVE-2021-24085
Spoofing

Microsoft SharePoint Information Disclosure Vulnerability
CVE-2021-24071
Information Disclosure

Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2021-24066, CVE-2021-24072
Remote Code Execution

Microsoft SharePoint Spoofing Vulnerability
CVE-2021-1726
Spoofing

Microsoft Teams iOS Information Disclosure Vulnerability
CVE-2021-24114
Information Disclosure

Microsoft Windows VMSwitch Information Disclosure Vulnerability
CVE-2021-24076
Information Disclosure

Microsoft.PowerShell.Utility Module WDAC Security Feature Bypass Vulnerability
CVE-2021-24082
Security Feature Bypass

Package Managers Configurations Remote Code Execution Vulnerability
CVE-2021-24105
Remote Code Execution

PFX Encryption Security Feature Bypass Vulnerability
CVE-2021-1731
Security Feature Bypass

Skype for Business and Lync Denial of Service Vulnerability
CVE-2021-24099
Denial of Service

Skype for Business and Lync Spoofing Vulnerability
CVE-2021-24073
Spoofing

Sysinternals PsExec Elevation of Privilege Vulnerability
CVE-2021-1733
Elevation of Privilege

System Center Operations Manager Elevation of Privilege Vulnerability
CVE-2021-1728
Elevation of Privilege

Visual Studio Code npm-script Extension Remote Code Execution Vulnerability
CVE-2021-26700
Remote Code Execution

Visual Studio Code Remote Code Execution Vulnerability
CVE-2021-1639
Remote Code Execution

Windows Address Book Remote Code Execution Vulnerability
CVE-2021-24083
Remote Code Execution

Windows Backup Engine Information Disclosure Vulnerability
CVE-2021-24079
Information Disclosure

Windows Console Driver Denial of Service Vulnerability
CVE-2021-24098
Denial of Service

Windows DirectX Information Disclosure Vulnerability
CVE-2021-24106
Information Disclosure

Windows Event Tracing Elevation of Privilege Vulnerability
CVE-2021-24102, CVE-2021-24103
Elevation of Privilege

Windows Installer Elevation of Privilege Vulnerability
CVE-2021-1727
Elevation of Privilege

Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-24096
Elevation of Privilege

Windows Mobile Device Management Information Disclosure Vulnerability
CVE-2021-24084
Information Disclosure

Windows Network File System Denial of Service Vulnerability
CVE-2021-24075
Denial of Service

Windows PKU2U Elevation of Privilege Vulnerability
CVE-2021-25195
Elevation of Privilege

Windows Remote Procedure Call Information Disclosure Vulnerability
CVE-2021-1734
Information Disclosure

Windows TCP/IP Denial of Service Vulnerability
CVE-2021-24086
Denial of Service

Windows Win32k Elevation of Privilege Vulnerability
CVE-2021-1698, CVE-2021-1732
Elevation of Privilege


Moderate

.NET Framework Denial of Service Vulnerability
CVE-2021-24111
Denial of Service

Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability
CVE-2021-24109
Elevation of Privilege

Windows Trust Verification API Denial of Service Vulnerability
CVE-2021-24080
Denial of Service

Related SpiderLabs Blogs