Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.1134 This security update resolves vulnerabilities in Microsoft Windows 11 May 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Windows Publisher: Microsoft Operating System: Windows Impact/Access: Access Confidential Data -- Remote with User Interaction Execute Arbitrary Code/Commands -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2016-0184 CVE-2016-0170 CVE-2016-0169 CVE-2016-0168 Original Bulletin: https://technet.microsoft.com/en-us/library/security/MS16-055 - --------------------------BEGIN INCLUDED TEXT-------------------- MS16-055: Critical - Security Update for Microsoft Graphics Component (3156754) Document Metadata Bulletin Number: MS16-055 Bulletin Title: Security Update for Microsoft Graphics Component Severity: Critical KB Article: 3156754 Version: 1.0 Published Date: May 10, 2016 Executive Summary This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits a specially crafted website. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. This security update is rated Critical for all supported releases of Microsoft Windows. Affected Software Windows Vista Windows Vista x64 Edition Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for Itanium-based Systems Service Pack 2 Windows 7 for 32-bit Systems Service Pack 1 Windows 7 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Windows 8.1 for 32-bit Systems Windows 8.1 for x64-based Systems Windows Server 2012 Windows Server 2012 R2 Windows RT 8.1 Windows 10 for 32-bit Systems Windows 10 for x64-based Systems Windows Server 2012 Vulnerability Information Multiple Windows Graphics Component Information Disclosure Vulnerabilities Information disclosure vulnerabilities exist when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerabilities could obtain information to further compromise the user's system. There are multiple ways an attacker could exploit the vulnerabilities, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage. The update addresses the vulnerabilities by correcting how the Windows GDI component handle objects in memory. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Windows Graphics Component Information Disclosure Vulnerability CVE-2016-0168 No No Windows Graphics Component Information Disclosure Vulnerability CVE-2016-0169 No No Windows Graphics Component RCE Vulnerability - CVE-2016-0170 A remote code execution vulnerability exists when the Windows GDI component fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. There are multiple ways an attacker could exploit the vulnerability: In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email or Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email. In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince a user to open the document file. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in the memory. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Windows Graphics Component RCE Vulnerability CVE-2016-0170 No No Direct3D Use After Free Vulnerability - CVE-2016-0184 A remote code execution vulnerability exists when the Windows GDI component fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights. There are multiple ways an attacker could exploit the vulnerability: In a web-based attack scenario, an attacker could host a specially crafted website that is designed to exploit the vulnerability and then convince a user to view the website. An attacker would have no way to force users to view the attacker-controlled content. Instead, an attacker would have to convince users to take action, typically by getting them to click a link in an email or Instant Messenger message that takes users to the attacker's website, or by opening an attachment sent through email. In a file sharing attack scenario, an attacker could provide a specially crafted document file that is designed to exploit the vulnerability, and then convince a user to open the document file. The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in the memory. The following table contains links to the standard entry for each vulnerability in the Common Vulnerabilities and Exposures list: Vulnerability title CVE number Publicly disclosed Exploited Direct3D Use After Free Vulnerability CVE-2016-0184 No Yes - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBVzJmBH6ZAP0PgtI9AQIDRQ//YQmuTqTxUq9ZJrEYDfz2bdQiQCTAsqUu FWlzIOn3hY42b3Vb1Q7dbNEFL8boSMUUrCIRcK0IS8wZ4JmtzrI5VjQFVWykPhE+ DjwTzORNyXo6SV3LCN5DtWAQuHn28sueHU7YdUU0HyFn2tGPQ1mjoT4mf+Z9bKz2 O37M5TVq7iS1eO34ToIWLEqkwHI+Jjv4242Voj8A9zmu/ZhQtoxy1pDvJi3iXWZP OMbb5pJJB13RlsYKnMwQ71db9izihTa/GttvkuwI3AZ7+CW3+qgPaiKH5sZwIEWj dph0/54XmKktfTeY3OkyPWVecsFpoHidat+OuX4Iu6f9cekUI3TrHqfA9D/mEyS/ Tg9XOjgZQQWCjTLgB1ynoFA1GpIIWHFtCg8l8baadD0ydy2Xk4zt1U/bCi0lPFl+ qoCxHBpVG0Rcy3nEEbNqJs3bCD8oKMSOr64IptxfdkQB/7BVCesq6ZgG73CxxYj9 AOj0CANiggdKjEX5E+52cQAfFS+wzR341xO46nk0FUday11ULmKJeVQIdxLt1FG7 Yb3pNdQT6zNd3p/CZVXaeG1OHTqJW9U3SBRwNkgxvPzLkeyxC3u2DNoAfQKy7/Vl +Aze40diUk3PaDSzWyHXN/CxKd23lUdxkTGWomI/l3jJZuZgrKmHQxXesN5brLxu r80r/udOq94= =2xlg -----END PGP SIGNATURE-----