Executive Summary

TitleVulnerability in .NET Framework Could Allow Security Feature Bypass (2984625)
NameMS14-046First vendor Publication2014-08-12
VendorMicrosoftLast vendor Modification2014-09-19
Severity (Vendor) ImportantRevision1.2

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Cvss Base Score4.3Attack RangeNetwork
Cvss Impact Score2.9Attack ComplexityMedium
Cvss Expoit Score8.6AuthenticationNone Required
Calculate full CVSS 2.0 Vectors scores


Severity Rating: Important
Revision Note: V1.2 (September 19, 2014): Updated the Known Issues entry in the Knowledge Base Article section from "None" to "Yes".
Summary: This security update resolves a privately reported vulnerability in Microsoft .NET Framework. The vulnerability could allow security feature bypass if a user visits a specially crafted website. In a web-browsing attack scenario, an attacker who successfully exploited this vulnerability could bypass the Address Space Layout Randomization (ASLR) security feature, which helps protect users from a broad class of vulnerabilities. The security feature bypass by itself does not allow arbitrary code execution. However, an attacker could use this ASLR bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, that could take advantage of the ASLR bypass to run arbitrary code.

Original Source

Url : https://technet.microsoft.com/en-us/library/security/MS14-046

CWE : Common Weakness Enumeration

100 %CWE-264Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:26465
Oval ID: oval:org.mitre.oval:def:26465
Title: .NET ASLR vulnerability - CVE-2014-4062 (MS14-046)
Description: Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.0 SP2, 3.5, and 3.5.1 does not properly implement the ASLR protection mechanism, which allows remote attackers to obtain sensitive address information via a crafted web site, aka ".NET ASLR Vulnerability."
Family: windows Class: vulnerability
Reference(s): CVE-2014-4062
Version: 5
Platform(s): Microsoft Windows 7
Microsoft Windows 8
Microsoft Windows Server 2012
Microsoft Windows 8.1
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2008
Microsoft Windows Server 2008 R2
Microsoft Windows Vista
Product(s): Microsoft .NET Framework 2.0
Microsoft .NET Framework 3.0
Microsoft .NET Framework 3.5
Microsoft .NET Framework 3.5.1
Definition Synopsis:

CPE : Common Platform Enumeration


Information Assurance Vulnerability Management (IAVM)

2014-08-14IAVM : 2014-A-0128 - Microsoft .NET Framework Security Feature Bypass Vulnerability
Severity : Category II - VMSKEY : V0053805

Snort® IPS/IDS

2014-11-16Microsoft Internet Explorer CGeneratedTreeNode use-after-free attempt
RuleID : 31793 - Revision : 2 - Type : BROWSER-IE
2014-11-16Microsoft Internet Explorer CGeneratedTreeNode use-after-free attempt
RuleID : 31792 - Revision : 2 - Type : BROWSER-IE

Nessus® Vulnerability Scanner

2014-08-12Name : The version of the .NET Framework installed on the remote host is affected by...
File : smb_nt_ms14-046.nasl - Type : ACT_GATHER_INFO

Alert History

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2015-10-18 17:26:19
  • Multiple Updates
2014-11-16 21:25:26
  • Multiple Updates
2014-09-19 21:29:29
  • Multiple Updates
2014-09-19 21:16:35
  • Multiple Updates
2014-09-16 21:30:56
  • Multiple Updates
2014-09-16 21:17:10
  • Multiple Updates
2014-08-14 09:25:13
  • Multiple Updates
2014-08-13 13:25:00
  • Multiple Updates
2014-08-13 05:25:47
  • Multiple Updates
2014-08-12 21:29:08
  • Multiple Updates
2014-08-12 21:17:09
  • First insertion