#windows

# Microsoft Security Advisory CVE-2024-21386: .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 ASP.NET 6.0, ASP.NET 7.0 and, ASP.NET 8.0 . This advisory also provides guidance on what developers can do to update their applications to address this vulnerability. A vulnerability exists in ASP.NET applications using SignalR where a malicious client can result in a denial-of-service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/295 ### <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 6.0.26 or earlier. * Any .NET 7.0 application running on .NET 7.0.15 or earlier. * Any .NET 8.0 application running on .NET 8.0.1 or ...

Although considered of moderate risk, one of the vulnerabilities is being actively exploited in the wild — CVE-2024-21351, a security feature bypass vulnerability in Windows SmartScreen.

By Deeba Ahmed Ivanti has released patches for vulnerabilities found in its enterprise VPN appliances, including two flagged as exploited zero-days… This is a post from HackRead.com Read the original post: Ivanti VPN Flaws Exploited by DSLog Backdoor and Crypto Miners

Threat actors are abusing commercial remote software like AnyDesk to phish users and defraud them.

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

**How could an attacker exploit this vulnerability?** In most situations, an unauthenticated attacker could send a specially crafted packet to a targeted server utilizing the HTTP Protocol Stack (http.sys) to process packets.

**Where can I find more information about NTLM relay attacks?** Download Mitigating Pass the Hash (PtH) Attacks and Other Credential Theft, Version 1 and 2. This document discusses Pass-the-Hash (PtH) attacks against the Windows operating systems and provides holistic planning strategies that, when combined with the Windows security features, will provide a more effective defense against pass-the-hash attacks.

**What kind of security feature could be bypassed by successfully exploiting this vulnerability?** An attacker who successfully exploited this vulnerability could bypass the Windows Code Integrity Guard (CIG).

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment.