Monday, October 30, 2017

KB4022724 : Vulnerability Mitigation

KB4022724: Windows Server 2012 Standard June 2017 Cumulative Update 


 Nessus Vulnerability scans find a Vulnerability even though you have installed the update .Microsoft still requires you to make manual changes in registry for the vulnerability to be mitigated.

The following are the keys to be added 

Output
  •   The following registry key is missing.This registry key is required to enable the fix for CVE-2017-8529:
      SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ENABLE_PRINT_INFO_DISCLOSURE_FIX\iexplore.exe
    
    the following registry key is missing.This registry key is required to enable the fix for cve-2017-8529:
      SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ENABLE_PRINT_INFO_DISCLOSURE_FIX\iexplore.exe
    
    


Please take a backup of registry before making any changes .Alternatively you can choose  these two registry key to be imported instead of doing it manually. 


^^ Unfortunately google drive is recognizing the registry files as an audio file. Just download it and it will download as a reg file.




Given below is the tenable security scan report for the issue
Description
The remote Windows host is missing security update KB4022724. It is, therefore, affected by the following vulnerabilities :

- An elevation of privilege vulnerability exists in Windows Hyper-V instruction emulation due to a failure to properly enforce privilege levels. An attacker on a guest operating system can exploit this to gain elevated privileges on the guest. Note that the host operating system is not vulnerable. (CVE-2017-0193)

- Multiple information disclosure vulnerabilities exist in Windows Uniscribe due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or to open a specially crafted document file, to disclose the contents of memory. (CVE-2017-0282, CVE-2017-0284, CVE-2017-0285)

- Multiple remote code execution vulnerabilities exist in Windows Uniscribe due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or open a specially crafted document, to execute arbitrary code in the context of the current user.
(CVE-2017-0283, CVE-2017-8528)

- Multiple information disclosure vulnerabilities exist in the Windows GDI component due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website or to open a specially crafted document file, to disclose the contents of memory.
(CVE-2017-0287, CVE-2017-0288, CVE-2017-0289, CVE-2017-8531, CVE-2017-8532, CVE-2017-8533)

- Multiple remote code execution vulnerabilities exist in Microsoft Windows due to improper parsing of PDF files.
An unauthenticated, remote attacker can exploit these, by convincing a user to open a specially crafted PDF file, to execute arbitrary code in the context of the current user. (CVE-2017-0291, CVE-2017-0292)

- A remote code execution vulnerability exists in Microsoft Windows due to improper handling of cabinet files. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted cabinet file, to execute arbitrary code in the context of the current user. (CVE-2017-0294)

- An elevation of privilege vulnerability exists in tdx.sys due to a failure to check the length of a buffer prior to copying memory to it. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code in an elevated context.
(CVE-2017-0296)

- An elevation of privilege vulnerability exists in the Windows kernel due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to execute arbitrary code with elevated permissions. (CVE-2017-0297)

- An elevation of privilege vulnerability exists in the DCOM object in Helppane.exe, when configured to run as the interactive user, due to a failure to properly authenticate the client. An authenticated, remote attacker can exploit this, via a specially crafted application, to run arbitrary code in another user's session after that user has logged on to the same system using Terminal Services or Fast User Switching.
(CVE-2017-0298)

- Multiple information disclosure vulnerabilities exist in the Windows kernel due to improper initialization of objects in memory. An authenticated, remote attacker can exploit these, via a specially crafted application, to disclose the base address of the kernel driver.
(CVE-2017-0299, CVE-2017-0300, CVE-2017-8462)

- An information disclosure vulnerability exists in Microsoft Windows due to improper parsing of PDF files.
An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted PDF file, to disclose the contents of memory. (CVE-2017-8460)

- A remote code execution vulnerability exists in Windows due to improper handling of shortcuts. An unauthenticated, remote attacker can exploit this, by convincing a user to insert a removable drive containing a malicious shortcut and binary, to automatically execute arbitrary code in the context of the current user. (CVE-2017-8464)

- Multiple information disclosure vulnerabilities exist in the Windows kernel due to improper initialization of objects in memory. An authenticated, remote attacker can exploit these, via a specially crafted application, to disclose sensitive information. (CVE-2017-8469, CVE-2017-8470, CVE-2017-8471, CVE-2017-8472, CVE-2017-8473, CVE-2017-8474, CVE-2017-8475, CVE-2017-8476, CVE-2017-8477, CVE-2017-8478, CVE-2017-8479, CVE-2017-8480, CVE-2017-8481, CVE-2017-8482, CVE-2017-8483, CVE-2017-8484, CVE-2017-8485, CVE-2017-8488, CVE-2017-8489, CVE-2017-8490, CVE-2017-8491, CVE-2017-8492)

- Multiple remote code execution vulnerabilities exist in Microsoft browsers in the JavaScript engines due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website, to execute arbitrary code in the context of the current user. (CVE-2017-8517, CVE-2017-8522)

- Multiple remote code execution vulnerabilities exist in Internet Explorer due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these, by convincing a user to visit a specially crafted website, to execute arbitrary code in the context of the current user. (CVE-2017-8519, CVE-2017-8547)

- A remote code execution vulnerability exists in the Windows font library due to improper handling of embedded fonts. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website or open a specially crafted Microsoft document, to execute arbitrary code in the context of the current user. (CVE-2017-8527)

- An information disclosure vulnerability exists in Microsoft browsers in the scripting engines due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website, to disclose files on a user's computer. (CVE-2017-8529)*

- A remote code execution vulnerability exists in the Windows Search functionality due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, via a specially crafted SMB message, to execute arbitrary code. (CVE-2017-8543)

- An information disclosure vulnerability exists in the Windows Search functionality due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, via a specially crafted SMB message, to disclose sensitive information. (CVE-2017-8544)

- Multiple information disclosure vulnerabilities exist in the Windows kernel due to improper handling of objects in memory. An authenticated, remote attacker can exploit these, via a specially crafted application, to disclose the contents of memory. (CVE-2017-8553, CVE-2017-8554)

* note that a registry value must be added to enable the fix for CVE-2017-8529. if the patch is installed but not enabled, the registry key needed will be detailed in the output below.
Solution
Apply security update KB4022724.
See Also

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