[News] CVE-2017-11937 - Security vulnerabilities seriously affect Windows Defender and Microsoft Security Essentials
[News]
CVE-2017-11937 - Security vulnerabilities seriously affect Windows Defender and Microsoft Security Essentials
German security expert Thomas Gavin from the 'MSRC Vulnerabilities and Mitigations Team' has reported a very serious flaw in the Microsoft Malware Protection Engine (CVE-2017-11937).
A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption. An attacker who successfully exploited this vulnerability could execute arbitrary code in the security context of the LocalSystem account and take control of the system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
To exploit this vulnerability, a specially crafted file must be scanned by an affected version of the Microsoft Malware Protection Engine. There are many ways that an attacker could place a specially crafted file in a location that is scanned by the Microsoft Malware Protection Engine. For example, an attacker could use a website to deliver a specially crafted file to the victim's system that is scanned when the website is viewed by the user. An attacker could also deliver a specially crafted file via an email message or in an Instant Messenger message that is scanned when the file is opened. In addition, an attacker could take advantage of websites that accept or host user-provided content, to upload a specially crafted file to a shared location that is scanned by the Malware Protection Engine running on the hosting server.
If the affected antimalware software has real-time protection turned on, the Microsoft Malware Protection Engine will scan files automatically, leading to exploitation of the vulnerability when the specially crafted file is scanned. If real-time scanning is not enabled, the attacker would need to wait until a scheduled scan occurs in order for the vulnerability to be exploited. All systems running an affected version of antimalware software are primarily at risk.
Affected software includes: Microsoft Endpoint Protection, Microsoft Exchange Server, Microsoft Forefront Endpoint Protection, Microsoft Security Essentials, and Windows Defender. All versions of Windows with built-in Defender and Security Essentials are affected.
After receiving a message from the MSRC Vulnerabilities and Mitigations Team, Microsoft has released a security update for the vulnerability.
Products affected by vulnerability CVE-2017-11937
* Windows 10 version 1709 for 32-bit Systems
* Windows RT 8.1
* Windows 10 Version 1607 for x64-based Systems
* Windows 8.1 for x64-based systems
* Windows 10 Version 1703 for x64-based Systems
* Windows 10 for x64-based Systems
* Windows 7 for x64-based Systems Service Pack 1
* Windows 8.1 for 32-bit systems
* Windows 10 for 32-bit Systems
* Windows 10 Version 1511 for x64-based Systems
* Windows Server, version 1709 (Server Core Installation)
* Windows 10 Version 1607 for 32-bit Systems
* Windows Server 2016 (Server Core installation)
* Windows Server 2016
* Windows 10 Version 1703 for 32-bit Systems
* Windows Defender
* Microsoft Security Essentials
* Microsoft Forefront Endpoint Protection 2010
* Microsoft Forefront Endpoint Protection
* Microsoft Exchange Server 2016
* Microsoft Exchange Server 2013
* Microsoft Endpoint Protection
* Windows Intune Endpoint Protection
If the affected antimalware software has real-time protection turned on, the Microsoft Malware Protection Engine will scan files automatically, leading to exploitation of the vulnerability when the specially crafted file is scanned. If real-time scanning is not enabled, the attacker would need to wait until a scheduled scan occurs in order for the vulnerability to be exploited. All systems running an affected version of antimalware software are primarily at risk.
Affected software includes: Microsoft Endpoint Protection, Microsoft Exchange Server, Microsoft Forefront Endpoint Protection, Microsoft Security Essentials, and Windows Defender. All versions of Windows with built-in Defender and Security Essentials are affected.
After receiving a message from the MSRC Vulnerabilities and Mitigations Team, Microsoft has released a security update for the vulnerability.
Products affected by vulnerability CVE-2017-11937
* Windows 10 version 1709 for 32-bit Systems
* Windows RT 8.1
* Windows 10 Version 1607 for x64-based Systems
* Windows 8.1 for x64-based systems
* Windows 10 Version 1703 for x64-based Systems
* Windows 10 for x64-based Systems
* Windows 7 for x64-based Systems Service Pack 1
* Windows 8.1 for 32-bit systems
* Windows 10 for 32-bit Systems
* Windows 10 Version 1511 for x64-based Systems
* Windows Server, version 1709 (Server Core Installation)
* Windows 10 Version 1607 for 32-bit Systems
* Windows Server 2016 (Server Core installation)
* Windows Server 2016
* Windows 10 Version 1703 for 32-bit Systems
* Windows Defender
* Microsoft Security Essentials
* Microsoft Forefront Endpoint Protection 2010
* Microsoft Forefront Endpoint Protection
* Microsoft Exchange Server 2016
* Microsoft Exchange Server 2013
* Microsoft Endpoint Protection
* Windows Intune Endpoint Protection
From WhitHat VN and Microsoft