Microsoft security alert.

Advisory overview

Qualys Vulnerability R&D Lab has released new vulnerability checks in the Enterprise TruRisk Platform to protect organizations against 15 vulnerabilities that were fixed in 4 bulletins announced today by Microsoft. Customers can immediately audit their networks for these and other new vulnerabilities by accessing their Qualys subscription. Visit Qualys Security Blog to prioritize remediation.

Non-Qualys customers can audit their network for these and other vulnerabilities by signing up for a Qualys Free Trial, or by trying Qualys Community Edition.

Vulnerability details

Microsoft has released 4 security bulletins to fix newly discovered flaws in their software. Qualys has released the following checks for these new vulnerabilities:

• Microsoft Edge Cumulative Security Update (MS17-001)

  Severity

  Serious 3

  Qualys ID

  91327

  Vendor Reference

  MS17-001

  CVE Reference

  CVE-2017-0002

  CVSS Scores

  Base 6.8 / Temporal 5

  Description

  Microsoft Edge fails to enforce cross-domain policies with regards to about:blank, this could allow information from one domain to be injected in to another leading to elevation of privilege.

  Microsoft has assigned this advisory as Important for Microsoft Edge on Windows 10 and Windows Server 2016.

  The update resolves the vulnerability by assigning unique origin to top-level windows which navigate to data URLs.

  Consequence

  An attacker could host a website to exploit the vulnerability, it could also be exploited by providing crafted content to websites that accepts user input.

  Solution

  Customers are advised to refer to Microsoft Security Bulletin MS17-001 for details.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  MS17-001 Windows 10 Version 1511 for 32-bit Systems
  MS17-001 Windows 10 Version 1511 for 64-bit Systems
  MS17-001 Windows 10 Version 1607 for 32-bit
  MS17-001 Windows 10 Version 1607 for 64-bit
  MS17-001 Windows 10 for 32-bit Systems
  MS17-001 Windows 10 for 64-bit Systems
  MS17-001 Windows Server 2016

• Microsoft Office Remote Code Execution Vulnerability (MS17-002)

  Severity

  Critical 4

  Qualys ID

  110293

  Vendor Reference

  MS17-002

  CVE Reference

  CVE-2017-0003

  CVSS Scores

  Base 9.3 / Temporal 6.9

  Description

  A remote code execution vulnerability exists in Microsoft Office software when the Office software fails to properly handle objects in memory.

  The security update addresses the vulnerability by correcting how affected versions of Office and Office components handle objects in memory. Affected Versions:
  Microsoft Word 2016 and Microsoft SharePoint Enterprise Server 2016

  QID Detection Logic:
  This authenticated QID checks the file versions from above Microsoft KB article with the versions on affected office system.

  Consequence

  An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user.

  Solution

  Refer to MS17-002 for more information.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  MS17-002 Microsoft SharePoint Enterprise      Server 2016
  MS17-002 Microsoft Word 2016 (32-bit edition)
  MS17-002 Microsoft Word 2016 (64-bit edition)

• Microsoft Windows Update for Vulnerabilities in Adobe Flash Player in Internet Explorer (MS17-003)

  Severity

  Urgent 5

  Qualys ID

  100304

  Vendor Reference

  MS17-003

  CVE Reference

  CVE-2017-2925, CVE-2017-2926, CVE-2017-2927, CVE-2017-2928, CVE-2017-2930, CVE-2017-2931, CVE-2017-2932, CVE-2017-2933, CVE-2017-2934, CVE-2017-2935, CVE-2017-2936, CVE-2017-2937

  CVSS Scores

  Base 9.3 / Temporal 7.7

  Description

  The update addresses the vulnerabilities which are described in Adobe Security Bulletin APSB17-02, by updating the affected Adobe Flash libraries contained within Internet Explorer 10, Internet Explorer 11, and Microsoft Edge.

  This security update resolves vulnerabilities in Adobe Flash Player when installed on all supported editions of Windows 8.1, Windows Server 2012, Windows Server 2012 R2, Windows RT 8.1, Windows 10, and Windows Server 2016.

  Consequence

  Successful exploitation of this vulnerability will allow an unauthenticated, remote attacker to execute arbitrary code on the targeted system.

  Solution

  Customers are advised to view MS17-003 for instructions pertaining to the remediation of these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  MS17-003

• Microsoft Windows Local Security Authority Subsystem Service Denial of Service (MS17-004)

  Severity

  Serious 3

  Qualys ID

  91326

  Vendor Reference

  MS17-004

  CVE Reference

  CVE-2017-0004

  CVSS Scores

  Base 7.8 / Temporal 6.8

  Description

  The Local Security Authority Subsystem Service (LSASS) is a process in windows which is helps in enforcing security policies on a system.

  The updates fixes a fixes a denial of service attack by changing the way LSASS handles specially crafted authentication requests.

  Affected Operating Systems include Microsoft Windows Vista, Windows Server 2008 (including Core), Windows 7, and Windows Server 2008 R2 (including Core).

  The update is rated important for all affected Operating Systems.

  Consequence

  An attacker can cause a denial of service of attack because of flaws in the way authentication requests are handled by LSASS and cause a system reboot.

  Solution

  Customers are advised to view MS17-004 for instructions pertaining to the remediation of these vulnerabilities.

  Patches:
  The following are links for downloading patches to fix these vulnerabilities:
  MS17-004 Microsoft Windows

Access for Qualys Customers

Platforms and Platform Identification

Technical Support

For more information, customers may contact Qualys Technical Support.

About Qualys

The Enterprise TruRisk Platform and its integrated suite of security and compliance applications provides organizations of all sizes with a global view of their security and compliance solutions, while drastically reducing their total cost of ownership. Qualys solutions include: continuous monitoring, vulnerability management, policy compliance, PCI compliance, security assessment questionnaire, web application scanning, web application firewall, malware detection and SECURE Seal for security testing of web sites.