Microsoft .NET Framework up to 4.8 Common Language Runtime privileges management

Summaryinfo

A vulnerability classified as critical was found in Microsoft .NET Framework up to 4.8. Affected by this issue is some unknown functionality of the component Common Language Runtime. The manipulation results in privileges management. This vulnerability is reported as CVE-2019-1142. The attack can be launched remotely. No exploit exists. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Microsoft .NET Framework up to 4.8 (Programming Language Software). Affected is an unknown function of the component Common Language Runtime. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity, and availability. CVE summarizes:

An elevation of privilege vulnerability exists when the .NET Framework common language runtime (CLR) allows file creation in arbitrary locations, aka '.NET Framework Elevation of Privilege Vulnerability'.

The weakness was disclosed 09/10/2019 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2019-1142 since 11/26/2018. It is possible to launch the attack remotely. The successful exploitation requires a authentication. 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 the .NET Framework common language runtime (CLR) allows file creation in arbitrary locations. An attacker who successfully exploited this vulnerability could write files to folders that require higher privileges than what the attacker already has.

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

Type

• Programming Language Software

Vendor

• Microsoft

Name

• .NET Framework

Version

• 3.5
• 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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