The Reluctant SysAd

Saturday, August 11, 2018

VA SCAN: KB4088880: Windows Server 2012 March 2018 Security Update

ISSUE:

Description

The auditing Software Nessus/Others find Windows host is missing security update 4088880 or cumulative update 4088877 for systems which has already been patched.

CVES: (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754)(CVE-2018-0878)(CVE-2018-0929)(CVE-2018-0883)(CVE-2018-0881)(CVE-2018-0889, CVE-2018-0935)(CVE-2018-0811, CVE-2018-0813, CVE-2018-0814)(CVE-2018-0885)(CVE-2018-0886)(CVE-2018-0894, CVE-2018-0895, CVE-2018-0896, CVE-2018-0897, CVE-2018-0898, CVE-2018-0899, CVE-2018-0900, CVE-2018-0901, CVE-2018-0904)(CVE-2018-0868) (CVE-2018-0816, CVE-2018-0817) (CVE-2018-0888).

Cause: The issue is often caused due to the fact that not only are the systems to be patched but some values to the registry needs to be manually added.

a)SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\FeatureSettingsOverride

b) SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\FeatureSettingsOverrideMask

Solution: Please back up the registry in case you want to revert. Add the following commands in an administrative power shell.

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverride /t REG_DWORD /d 8 /f

reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management" /v FeatureSettingsOverrideMask /t REG_DWORD /d 3 /f

A restart is required for the changes to take effect.

Ref: KB Article 4072698

Tenable Scan: Security Updates for Internet Explorer (June 2017)

A High Vulnerability Alert Shows up in the Nessus Scan even after doing all the updates.

Description

The Internet Explorer installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

- A remote code execution vulnerability exists when Internet Explorer improperly accesses objects in memory.
This vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. (CVE-2017-8519, CVE-2017-8547)

- A remote code execution vulnerability exists in the way JavaScript engines render when handling objects in memory in Microsoft browsers. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2017-8517, CVE-2017-8522, CVE-2017-8524)

Solution:

Even though all updates have been done you need to manually change some registry settings in order to fully close this vulnerability.

Please run this as admin in power shell

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ENABLE_PRINT_INFO_DISCLOSURE_FIX" /v iexplore.exe /t REG_DWORD /d 1 /f

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_ENABLE_PRINT_INFO_DISCLOSURE_FIX" /v iexplore.exe /t REG_DWORD /d 1 /f

Restart the machine and do a re scan with Nessus and Vulnerability would appear as closed.

Tuesday, October 31, 2017

KB4025331: Windows Server 2012 July 2017 Cumulative Update

Nessus Output :

B4025331: Windows Server 2012 July 2017 Cumulative Update

Description

The remote Windows Server 2012 host is missing either the KB4025331 or KB4025343 security updates. It is, therefore, affected by the following vulnerabilities :

- An information disclosure vulnerability exists in the Windows Performance Monitor Console due to improper parsing of XML input that contains a reference to an external entity. An unauthenticated, remote attacker can exploit this, by convincing a user to create a Data Collector Set and import a specially crafted XML file, to disclose arbitrary files via an XML external entity (XXE) declaration. (CVE-2017-0170)

- A remote code execution vulnerability exists in Windows Explorer due to improper handling of executable files and shares during rename operations. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted file, to execute arbitrary code in the context of the current user. (CVE-2017-8463)

- An elevation of privilege vulnerability exists in the Microsoft Graphics component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8467)

- An information disclosure vulnerability exists in Win32k due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to disclose sensitive information.
(CVE-2017-8486)

- A security bypass vulnerability exists in Microsoft Windows when handling Kerberos ticket exchanges due to a failure to prevent tampering with the SNAME field. A man-in-the-middle attacker can exploit this to bypass the Extended Protection for Authentication security feature. (CVE-2017-8495)

- An elevation of privilege vulnerability exists in the Microsoft Graphics component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8556)

- An information disclosure vulnerability exists in the Windows System Information Console due to improper parsing of XML input that contains a reference to an external entity. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted file, to disclose arbitrary files via an XML external entity (XXE) declaration.
(CVE-2017-8557)

- 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-2017-8561)

- An elevation of privilege vulnerability exists in the Windows due to improper handling of calls to Advanced Local Procedure Call (ALPC). An authenticated, remote attacker can exploit this via a specially crafted application, to run processes in an elevated context.
(CVE-2017-8562)

- An elevation of privilege vulnerability exists in Windows due to Kerberos falling back to NT LAN Manager (NTLM) Authentication Protocol as the default authentication protocol. An authenticated, remote attacker can exploit this, via an application that sends specially crafted traffic to a domain controller, to run processes in an elevated context. (CVE-2017-8563)

- An information disclosure vulnerability exists in the Windows kernel due to improper initialization of objects in memory. An authenticated, remote attacker can exploit this, via a specially crafted application, to bypass Kernel Address Space Layout Randomization (KASLR) and disclose the base address of the kernel driver.
(CVE-2017-8564)

- A remote code execution vulnerability exists in PowerShell when handling a PSObject that wraps a CIM instance. An authenticated, remote attacker can exploit this, via a specially crafted script, to execute arbitrary code in a PowerShell remote session.
(CVE-2017-8565)

- An elevation of privilege vulnerability exists in the Microsoft Graphics component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8573)

- An elevation of privilege vulnerability exists in the Microsoft Graphics Component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8577)

- An elevation of privilege vulnerability exists in the Microsoft Graphics component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8578)

- An elevation of privilege vulnerability exists in the Microsoft Graphics Component due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode. (CVE-2017-8580)

- An elevation of privilege vulnerability exists in Windows due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run arbitrary code in kernel mode.
(CVE-2017-8581)

- An information disclosure vulnerability exists in the HTTP.sys server application component due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to disclose sensitive information.
(CVE-2017-8582)

- A denial of service vulnerability exists in Windows Explorer that is triggered when Explorer attempts to open a non-existent file. An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website, to cause a user's system to stop responding. (CVE-2017-8587)

- A remote code execution vulnerability exists in WordPad due to improper parsing of specially crafted files. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted file, to execute arbitrary code in the context of the current user. (CVE-2017-8588)

- A remote code execution vulnerability exists in the Windows Search component due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit this, by sending specially crafted messages to the Windows Search service, to elevate privileges and execute arbitrary code. (CVE-2017-8589)

- An elevation of privilege vulnerability exists in the Windows Common Log File System (CLFS) driver due to improper handling of objects in memory. A local attacker can exploit this, via a specially crafted application, to run processes in an elevated context. (CVE-2017-8590)

- A security bypass vulnerability exists in Microsoft browsers due to improper handling of redirect requests.
An unauthenticated, remote attacker can exploit this, by convincing a user to visit a specially crafted website, to bypass CORS redirect restrictions. (CVE-2017-8592)

- A remote code execution vulnerability exists in Microsoft browsers in the JavaScript 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 execute arbitrary code in the context of the current user. (CVE-2017-8606)

- A remote code execution vulnerability exists in Microsoft browsers in the JavaScript 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 execute arbitrary code in the context of the current user. (CVE-2017-8607)

- A remote code execution vulnerability exists in Microsoft browsers in the JavaScript 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 execute arbitrary code in the context of the current user. (CVE-2017-8608)

- A remote code execution vulnerability exists in Microsoft Edge in the scripting engine 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 execute arbitrary code in the context of the current user.
(CVE-2017-8610)

Solution

Apply one of the following security updates :

- KB4025331
- KB4025343

Output

  The registry key "SYSTEM\CurrentControlSet\Services\NTDS\Parameters\LdapEnforceChannelBinding"
  is missing or is not equal to "1" or "2"

Remediation :

Even after applying the update you will see that Nessus still detects it as an vulnerability. In order to fully mitigate it you need to create the following entries

To help make LDAP authentication over SSL\TLS more secure, administrators can configure the following registry settings:

Path for Active Directory Domain Services (AD DS) domain controllers: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NTDS\Parameters
Path for Active Directory Lightweight Directory Services (AD LDS) servers: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<LDS instance name>\Parameters
DWORD Name: LdapEnforceChannelBinding (Microsoft article has made a mistake and lists the DWORD Name as a Key which is incorrect )
DWORD value: 0 indicates disabled. No channel binding validation is performed. This is the behavior of all servers that have not been updated.
DWORD value: 1 indicates enabled, when supported. All clients that are running on a version of Windows that has been updated to support channel binding tokens (CBT) must provide channel binding information to the server. Clients that are running a version of Windows that has not been updated to support CBT do not have to do so. This is an intermediate option that allows for application compatibility.
DWORD value: 2 indicates enabled, always. All clients must provide channel binding information. The server rejects authentication requests from clients that do not do so.

Further Reading : https://support.microsoft.com/en-us/help/4034879/how-to-add-the-ldapenforcechannelbinding-registry-entry

Monday, October 30, 2017

Nessus :Microsoft XML Parser (MSXML) and XML Core Services Unsupported

Microsoft XML Parser (MSXML) and XML Core Services Unsupported

Description

The remote host contains one or more unsupported versions of the Microsoft XML Parser (MSXML) or XML Core Services.

Lack of support implies that no new security patches for the product will be released by the vendor. As a result, it is likely to contain security vulnerabilities.

Note that support for MSXML 3.0 and 6.0 is based on the support policy of the operating system on which it is installed. Support for MSXML 5.0 is based on the Microsoft Office lifecycle policy.

Solution

Upgrade the software packages responsible for the unsupported DLL versions or upgrade to a supported version of Windows (Vista / 2008 or later). Alternatively, uninstall the outdated MSXML or XML Core Services.

Output

    Path               : C:\Windows\SysWOW64\msxml4.dll
    File version       : 4.20.9818.0
    XML Core version   : 4.0 Post SP3 (KB2758694)
    EOL date           : 2014/04/12
    EOL announcement   : https://support.microsoft.com/en-us/lifecycle/search/7921
    Supported versions : 5.20.1076 (Office 2007) / 6.0 or later on a supported version of

```
 Windows (Vista / 2008 or later).
```

Resolution:

In most cases these are unnecessary files and there are no good way to remove these . Browse to the C:\Windows\SysWOW64\msxml4.dll location .Copy the Msml14.dll to another location ( not necessary but as an insurance against eventualities ) and then delete the file or rename it. Your next Nessus scan would show the issue as resolved . MSXML 4.0 is not needed for general OS usage and is no longer supported by Microsoft.

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.

https://drive.google.com/file/d/0Bwovg77En1zsWHZjTjN6dUZYLW8/view?usp=sharing

^^ 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.

KB4022722: Vulnerability Mitigation

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.

https://drive.google.com/file/d/0Bwovg77En1zsWHZjTjN6dUZYLW8/view?usp=sharing

^^ 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

Critical

KB4022722: Windows 7 and Windows 2008 R2 June 2017 Cumulative Update

Description

The remote Windows host is missing security update KB4022722. It is, therefore, affected by multiple 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)

- A remote code execution vulnerability exists in Microsoft Office due to improper validation of user-supplied input before loading dynamic link library (DLL) files. An unauthenticated, remote attacker can exploit this, by convincing a user to open a specially crafted file, to execute arbitrary code in the context of the current user. (CVE-2017-0260)

- 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, CVE-2017-8534)

- Multiple remote code execution vulnerabilities exist in Windows Uniscribe software 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 execute arbitrary code in the context of the current user. (CVE-2017-0283, CVE-2017-8528)

- Mutiple 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-2017-0286, CVE-2017-0287, CVE-2017-0288, CVE-2017-0289, CVE-2017-8531, CVE-2017-8532, CVE-2017-8533)

- 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)

- 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-2017-8475, 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 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 Microsoft browsers in the JavaScript 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 execute arbitrary code in the context of the current user. (CVE-2017-8524)

- 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 KB4022722.

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

Sunday, August 13, 2017

OWA displaying Blanks Page

You might get this error either after an Exchange Restart, update roll up or just out of the blue . The users will complaint that when they try to access the servers they get a blank page

Usually the url Looks something like this

Url error https://mail.nmc.com.bh/owa/auth/logon.aspx?url=https://mail.nmc.com.bh/owa/&reason=0

The Resolution

Before doing anything else please make sure the " MSExchangeFBA" service is running

1) Go to Run, type services.msc

2)When the service window pops up , locate the Microsoft Exchange Forms-Based Authentication service in the details pane.

3)Right-click the service, and then click Start./Restart. Ensure that the Exchange FBA service is running before doing the step 4

s 4)Run Exchange Management Shell as Administrator

Find Exchange Management Shell program, then right click on it and Run As Administrator - This is IMPORTANT. Click Yes to agree running as administrator when pop-up appears. The console will perform its own initialization, a Welcome Screen will appear and then you will be dropped to a DOS Prompt (c:\Windows\system32)

5) Please run Script Fix

At flashing cursor, type the following commands

If you are using Exchange 2010

a) CD "C:\Program Files\Microsoft\Exchange Server\V14\Bin" and then press <ENTER>

b) Subdirectory will change to the above.

c) updatecas.ps1, then press <ENTER>

d) The script runs automatically on the background executing various command. When it finishes . type exist and close the administrative shell

If you are using Exchange 2013

a) CD "C:\Program Files\Microsoft\Exchange Server\V15\Bin" and then press <ENTER>

b) Subdirectory will change to the above.

c) updatecas.ps1, then press <ENTER>

If you are using Exchange 2007

a) CD "C:\\Program Files\Microsoft\Exchange Server\Bin" and then press <ENTER>

b) Subdirectory will change to the above.

c)UpdateOwa.ps1, then press <ENTER>

Saturday, August 11, 2018

Description

Description

Tuesday, October 31, 2017

Nessus Output :

B4025331: Windows Server 2012 July 2017 Cumulative Update

Description

Solution

See Also

Output

Remediation :

Monday, October 30, 2017

Microsoft XML Parser (MSXML) and XML Core Services Unsupported

Description

Solution

See Also

Output

Resolution:

KB4022724: Windows Server 2012 Standard June 2017 Cumulative Update

Output

Description

Solution

See Also

KB4022722: Vulnerability Mitigation

Output:

KB4022722: Windows 7 and Windows 2008 R2 June 2017 Cumulative Update

Description

Solution

See Also

Output

Sunday, August 13, 2017

OWA displaying Blanks Page

1) Go to Run, type services.msc

s 4)Run Exchange Management Shell as Administrator

5) Please run Script Fix

6) Exit the shell and Try OWA again . It should Work