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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2018-0212
Multiple Vulnerabilities in .NET Framework

Original Issue Date:December 12, 2018

Severity Rating: HIGH

Software Affected

  • Microsoft .NET Framework 3.5
  • Microsoft .NET Framework 3.5 SP 1
  • Microsoft .NET Framework 3.5.1
  • Microsoft .NET Framework 4.5.2
  • Microsoft .NET Framework 4.6
  • Microsoft .NET Framework 4.6.1
  • Microsoft .NET Framework 4.6.2
  • Microsoft .NET Framework 4.7
  • Microsoft .NET Framework 4.7.1
  • Microsoft .NET Framework 4.7.2
  • Windows 10 for 32-bit Systems and x64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems and x64-based Systems
  • Windows 10 Version 1703 for 32-bit Systems and x64-based Systems
  • Windows 10 Version 1709 for 32-bit Systems, 64-based Systems and ARM64-based Systems
  • Windows 10 Version 1803 for 32-bit Systems and x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems and x64-based Systems
  • Windows 7 for 32-bit Systems SP 1 and x64-based Systems SP 1
  • Windows 8.1 for 32-bit systems and x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 for 32-bit Systems SP 2, Itanium-Based Systems SP 2 and x64-based Systems SP 2
  • Windows Server 2008 R2 for Itanium-Based Systems SP 1 and x64-based Systems SP 1
  • Windows Server 2012
  • Windows Server 2012 R2
  • Windows Server 2016
  • Windows Server 2019
  • Windows Server 2008 R2 for x64-based Systems SP 1 (Server Core installation)
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016  (Server Core installation)
  • Windows Server 2019  (Server Core installation)
  • Windows Server, version 1709  (Server Core Installation)
  • Windows Server, version 1803  (Server Core Installation)

Overview

Multiple vulnerabilities have been reported in Microsoft .NET Framework which could allow a remote attacker to conduct remote code execution attacks or cause denial of service conditions.

Description

1. .NET Framework Denial of Service Vulnerability ( CVE-2018-8517   )

This vulnerability exists in Microsoft .NET Framework due to improper handling of special web requests. A remote attacker could exploit this vulnerability by sending specially crafted requests to the .NET framework application.
Successful exploitation of this vulnerability could allow the attacker to cause denial of service conditions against the .NET Framework web application.

2. .NET Framework Remote Code Injection Vulnerability ( CVE-2018-8540   )

This vulnerability exists in Microsoft .NET Framework due to its failure to validate input properly. A remote attacker could exploit this vulnerability by passing specially crafted input to an application utilizing susceptible .Net methods.
Successful exploitation of this vulnerability could allow the attacker to execute arbitrary code and compromise the system completely.

Solution

Apply appropriate software fixes as available on the vendor website.
https://portal.msrc.microsoft.com/en-us/security-guidance

Vendor Information

Microsoft
https://portal.msrc.microsoft.com/en-us/security-guidance

References

Microsoft
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8517
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8540

Cisco
https://tools.cisco.com/security/center/viewAlert.x?alertId=59272
https://tools.cisco.com/security/center/viewAlert.x?alertId=59273

CVE Name
CVE-2018-8517
CVE-2018-8540

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-24368572

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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