Tag
#asp.net
# Microsoft Security Advisory CVE-2023-35391: .NET Information Disclosure Vulnerability ## <a name="executive-summary"></a>Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET core 2.1, .NET 6.0 and, .NET 7.0. 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 2.1, .NET 6.0 and, .NET 7.0 applications using SignalR when redis backplane use might result in information disclosure. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/267 ### <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 7.0 application running on .NET 7.0.9 or earlier. * Any .NET 6.0 application running on .NET 6.0.20 or earlier. If your appli...
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added a recently patched security flaw in Microsoft's .NET and Visual Studio products to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation. Tracked as CVE-2023-38180 (CVSS score: 7.5), the high-severity flaw relates to a case denial-of-service (DoS) impacting .NET and Visual Studio. It
# Microsoft Security Advisory CVE-2023-38178: .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 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in .NET Kestrel where a malicious client can bypass QUIC stream limit in HTTP/3 in both ASP.NET and .NET runtimes resulting in denial of service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/268 ### <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 7.0 application running on .NET 7.0.9 or earlier. If your application uses the following package versions, ensure you update to the latest version of ....
# Microsoft Security Advisory CVE-2023-38180: .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 Core 2.1, .NET 6.0, and .NET 7.0. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exists in Kestrel where, on detecting a potentially malicious client, Kestrel will sometimes fail to disconnect it, resulting in denial of service. ## Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/269 ### <a name="mitigation-factors"></a>Mitigation factors If your application is running behind a reverse proxy, or Web Application Firewall, which has its own mitigations against HTTP based attacks this issue may be mitigated by the proxy or WAF ## <a name="affected-software"></a>Affected software * Any .NET 7.0 applicat...
ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability
**What type of information could be disclosed by this vulnerability?** This vulnerability makes it possible to listen to any group or user with a specially crafted group/username. By exploiting this vulnerability, the attacker can now receive messages for group(s) that they are unauthorized to view.
**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** The target environment could be accidentally configured to allow the vulnerability.
**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** The target environment could be accidentally configured to allow the vulnerability.
**What type of information could be disclosed by this vulnerability?** This vulnerability makes it possible to listen to any group or user with a specially crafted group/username. By exploiting this vulnerability, the attacker can now receive messages for group(s) that they are unauthorized to view.