Microsoft .NET Framework up to 4.8 Source Markup input validation

Summaryinfo

A vulnerability classified as critical has been found in Microsoft .NET Framework up to 4.8. Affected is an unknown function of the component Source Markup Handler. This manipulation causes input validation. This vulnerability is handled as CVE-2019-1113. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft .NET Framework up to 4.8 (Programming Language Software). Affected by this vulnerability is some unknown processing of the component Source Markup Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka '.NET Framework Remote Code Execution Vulnerability'.

The weakness was released 07/09/2019 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release was coordinated with Microsoft. This vulnerability is known as CVE-2019-1113 since 11/26/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.

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

Entry connected to this vulnerability is available at VDB-137522. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Programming Language Software

Vendor

• Microsoft

Name

• .NET Framework

Version

• 2.0 SP2
• 3.0 SP2
• 3.5
• 3.5.1
• 4.5.2
• 4.6
• 4.6.1
• 4.6.2
• 4.7
• 4.7.1
• 4.7.2
• 4.8

License

• free

Website

• Vendor: https://www.microsoft.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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