#windows

# Microsoft Security Advisory CVE-2024-38095 | .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0 and .NET 8.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A Vulnerability exists when System.Formats.Asn1 in .NET parses an X.509 certificate or collection of certificates, a malicious certificate can result in excessive CPU consumption on all platforms result in Denial of Service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/312 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 6.0 application running on .NET 6.0.31 or earlier. * Any .NET 8.0 application runni...

# Microsoft Security Advisory CVE-2024-38081 | .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 6.0 . This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A Vulnerability exist in Visual Studio installer on Windows OS where an unprivileged user is allowed to manipulate the Visual Studio installation resulting in elevation of privilege. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/313 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 6.0 application running on .NET 6.0.31 or earlier. ## <a name="affected-packages"></a>Affected Packages The vulnerability affects any Mi...

# Microsoft Security Advisory CVE-2024-35264 | .NET Remote Code Execution Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A Vulnerability exists in ASP.NET Core 8 where Data Corruption in Kestrel HTTP/3 can result in remote code execution. Note: HTTP/3 is experimental in .NET 6.0. If you are on .NET 6.0 and using HTTP/3, please upgrade to .NET 8.0.7 ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/314 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 8.0 application running on .NET 8.0.6 or earlier. ## <a name="affected-packages"></a...

# Microsoft Security Advisory CVE-2024-30105 | .NET Denial of Service Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 8.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET when calling the JsonSerializer.DeserializeAsyncEnumerable method against an untrusted input using System.Text.Json may result in Denial of Service. ## Discussion Discussion for this issue can be found at https://github.com/dotnet/runtime/issues/104619 ## <a name="mitigation-factors"></a>Mitigation factors Microsoft has not identified any mitigating factors for this vulnerability. ## <a name="affected-software"></a>Affected software * Any .NET 8.0 application running on .NET 8.0.6 or earlier. ## <a name="affected-packages"></a>Affected Packages The vulnerability affects any Microsoft .NE...

Microsoft Corp. today issued software updates to plug 139 security holes in various flavors of Windows and other Microsoft products. Redmond says attackers are already exploiting at least two of the vulnerabilities in active attacks against Windows users.

This is the largest Patch Tuesday since April, when Microsoft patched 150 vulnerabilities.

### Observations The file `packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts` implements the signature validation routine for Electron applications on Windows. It executes the following command in a new shell (`process.env.ComSpec` on Windows, usually `C:\Windows\System32\cmd.exe`): https://github.com/electron-userland/electron-builder/blob/140e2f0eb0df79c2a46e35024e96d0563355fc89/packages/electron-updater/src/windowsExecutableCodeSignatureVerifier.ts#L35-L41 Because of the surrounding shell, a first pass by `cmd.exe` expands any environment variable found in command-line above. ### Exploitation This creates a situation where `verifySignature()` can be tricked into validating the certificate of a different file than the one that was just downloaded. If the step is successful, the malicious update will be executed even if its signature is invalid. ### Impact This attack assumes a compromised update manifest (server compromise, Man-in-the-Middle attack if fet...

Ivanti Endpoint Manager (EPM) 2022 SU5 and prior versions are susceptible to an unauthenticated SQL injection vulnerability which can be leveraged to achieve unauthenticated remote code execution.

**According to the CVSS score, the attack vector is adjacent (AV:A). What does this mean for this vulnerability?** This attack is limited to systems connected to the same network segment as the attacker. The attack cannot be performed across multiple networks (for example, a WAN) and would be limited to systems on the same network switch or virtual network.

**Are there any further actions I need to take to be protected from this vulnerability?** Yes. The Windows Smart Card infrastructure relies on the Cryptographic Service Provider (CSP) and Key Storage Provider (KSP) to isolate cryptographic operations from the Smart Card implementation. The KSP is part of the Crypto Next Generation (CNG) architecture and is intended to support modern smart cards. In the case of RSA based certificates, the Smart Card Certificate Propagation service automatically overrides the default and uses the CSP instead of the KSP. This limits usage to the cryptography provided by the CSP and does not benefit from the modern cryptography provided by the KSP. Beginning with the July 2024 security updates released on July 9, 2024, this vulnerability will be addressed by removing the RSA override and using the KSP as the default. This change is initially disabled by default to allow customers to test it in their environment and to detect any application compatibility...