Microsoft ASP.NET Core 2.1/2.2 redirect

Summaryinfo

A vulnerability described as problematic has been identified in Microsoft ASP.NET Core 2.1/2.2. This affects an unknown part. Executing a manipulation can lead to redirect. This vulnerability is registered as CVE-2019-1075. It is possible to launch the attack remotely. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft ASP.NET Core 2.1/2.2. It has been declared as critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A spoofing vulnerability exists in ASP.NET Core that could lead to an open redirect, aka 'ASP.NET Core Spoofing Vulnerability'.

The weakness was published 07/09/2019 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release has been coordinated with the vendor. This vulnerability was named CVE-2019-1075 since 11/26/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project. The advisory points out:

A spoofing vulnerability exists in ASP.NET Core that could lead to an open redirect. An attacker who successfully exploited the vulnerability could redirect a targeted user to a malicious website.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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Productinfo

Vendor

• Microsoft

Name

• ASP.NET Core

Version

• 2.1
• 2.2

License

• open-source

Website

• Vendor: https://www.microsoft.com/

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CPE 2.2info

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