CVE-2023-33170

Red Hat Security Advisory 2023-4449-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 6.0.120 and .NET Runtime 6.0.20. Issues addressed include code execution, denial of service, and heap corruption vulnerabilities.

Red Hat Security Advisory 2023-4448-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 6.0.120 and .NET Runtime 6.0.20. Issues addressed include code execution, denial of service, and heap corruption vulnerabilities.

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 8.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-29331: A vulnerability was found in dotnet. This issue can lead to a denial of service while processing X509 Certificates. * CVE-2023-29337: A vulnerability was found in dotnet. This issue exists in NuGet where a potential race condition can lead to a symlink attack. * CVE-2023-33128: A vulnerability was found in dotnet. This...

Red Hat Security Advisory 2023-4058-01 - .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

An update for .NET 6.0 is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2023-33170: A vulnerability was found in dotNET applications where account lockout maximum failed attempts may not be immediately updated, allowing an attacker to try more passwords and bypass security restrictions. This flaw allows a remote attacker to bypass security features, causing an impact on confidentiality, integrity, and availability.

Ubuntu Security Notice 6217-1 - McKee-Harris, Matt Cotterell, and Jack Moran discovered that .NET did not properly update account lockout maximum failed attempts. An attacker could possibly use this issue to bypass the security feature and attempt to guess more passwords for an account.

# Microsoft Security Advisory CVE-2023-33170: .NET Security Feature Bypass 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 and above. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A vulnerability exist in ASP.NET Core applications where account lockout maximum failed attempts may not be immediately updated, allowing an attacker to try more passwords. ## Discussion Discussion for this issue can be found at https://github.com/dotnet/aspnetcore/issues/49334 ### <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 ASP.NET 7.0 application running on .NET 7.0.8 or earlier. * Any ASP.NET 6.0 application running on .NET 6.0.19 or earlier. * Any ASP.N...

**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 win a race condition and also to take additional actions prior to exploitation to prepare the target environment.