Microsoft .NET Framework up to 4.8 Cache File privileges management

Summaryinfo

A vulnerability described as critical has been identified in Microsoft .NET Framework up to 4.8. This vulnerability affects unknown code of the component Cache File Handler. Executing a manipulation can lead to privileges management. The identification of this vulnerability is CVE-2020-1476. The attack may be launched remotely. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Microsoft .NET Framework up to 4.8 (Programming Language Software). It has been declared as critical. This vulnerability affects an unknown code block of the component Cache File Handler. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.

The weakness was shared 08/11/2020 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2020-1476. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project. The advisory points out:

An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files.

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

The entry VDB-159510 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Programming Language Software

Vendor

• Microsoft

Name

• .NET Framework

Version

• 2.0 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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• 🔍
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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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