BeyondTrust

Security in Context: The BeyondTrust Blog

Welcome to Security in Context

Bringing you news and commentary on solutions and strategies for protecting critical IT infrastructure in the context of your business.

Microsoft Patch Tuesday – August 2011

Posted August 9, 2011    Chris Silva

True to form for the even months of 2011, Microsoft released thirteen security bulletins today.

Of the most interest are MS11-057 (Internet Explorer) and MS11-058 (DNS Server). While it has become fairly commonplace for Microsoft to release an Internet Explorer patch every other month, this release also patches IE9 – the second time a critical vulnerability has been patched in Microsoft’s latest browser since its release in March.

Adobe released five security bulletins of their own today. They patched the usual suspects (Shockwave, Flash Player, Flash Media Server) plus Photoshop CS5 (memory corruption when viewing a malicious GIF file) and RoboHelp (another XSS vulnerability).

Sign up for tomorrow’s Vulnerability Expert Forum (VEF) for more details. The eEye Research Team will have lots to cover this month, so be sure to join us for our complete analysis.

Here are our recommendations for the security updates. Retina Network Security Scanner customers can view the list of audits associated with these bulletins.

Deploy Immediately

MS11-057 – Cumulative Security Update for Internet Explorer (2559049)
Recommendation: Install the patch immediately to prevent exploitation by attackers. Until the patch can be installed, block ports 139 and 445 using a firewall, prevent the WebClient service from running, read emails in plain text, block ActiveX controls and block/disable Active Scripting in both Internet and Local intranet zones. Additionally, the default cookie folder should be renamed to a random name and the registry key, HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders\Cookies, should reflect this new name.

MS11-058 – Vulnerabilities in DNS Server Could Allow Remote Code Execution (2562485)
Recommendation: Install the patch immediately to prevent exploitation by attackers. If the DNS service is not being used, stopping or disabling the service will help to mitigate the vulnerability. Best practices suggest disabling unused services, so any services that are not required should be disabled, as part of a standard security policy.

Deploy As Soon As Possible

MS11-059 – Vulnerability in Data Access Components Could Allow Remote Code Execution (2560656)
Recommendation: Deploy patch as soon as possible. Until the patch can be applied, block ports 139 and 445 using a firewall, prevent the WebClient service from running, and prevent DLLs from being loaded from WebDAV and remote shares.

MS11-060 – Vulnerabilities in Microsoft Visio Could Allow Remote Code Execution (2560978)
Recommendation: Deploy patch as soon as possible, since no reasonable mitigation is available.

MS11-061 – Vulnerability in Remote Desktop Web Access Could Allow Elevation of Privilege (2546250)
Recommendation: Deploy patch as soon as possible. Until the patch can be installed, enable the XSS filter in Internet Explorer (available in versions 8 and higher).

MS11-062 – Vulnerability in Remote Access Service NDISTAPI Driver Could Allow Elevation of Privilege (2566454)
Recommendation: Deploy patch as soon as possible, since no mitigation is available.

MS11-063 – Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2567680)
Recommendation: Deploy patch as soon as possible, since no mitigation is available.

MS11-064 – Vulnerabilities in TCP/IP Stack Could Allow Denial of Service (2563894)
Recommendation: Deploy patch as soon as possible. Until the patch can be installed, block ICMP packets by using a firewall. If it will not interfere with network efficiency, it is advised to disable Policy-based Quality of Service.

MS11-065 – Vulnerability in Remote Desktop Protocol Could Allow Denial of Service (2570222)
Recommendation: Deploy patch as soon as possible. Until the patch can be applied, block TCP port 3389 using a firewall, and disable any unused remote access services (such as Terminal Services, Remote Desktop, Remote Assistance, and Remote Web Workplace).

MS11-066 – Vulnerability in Microsoft Chart Control Could Allow Information Disclosure (2567943)
Recommendation: Deploy patch as soon as possible, since no mitigation is available.

MS11-067 – Vulnerability in Microsoft Report Viewer Could Allow Information Disclosure (2578230)
Recommendation: Deploy patch as soon as possible. Until the patch can be installed, block ActiveX controls and block/disable Active Scripting in both Internet and Local intranet zones.

Deploy At Earliest Convenience

MS11-068 – Vulnerability in Windows Kernel Could Allow Denial of Service (2556532)
Recommendation: Deploy patch at the earliest convenience. Until the patch can be applied, block ports 139 and 445 using a firewall, prevent the WebClient service from running, and disable both the Preview and Details Pane in Windows Explorer.

MS11-069 – Vulnerability in .NET Framework Could Allow Information Disclosure (2567951)
Recommendation: Deploy patch at the earliest convenience. Until the patch can be installed, prevent XAML browser applications from running within Internet Explorer, since this is the most likely target for exploiting this vulnerability.

Leave a Reply

Additional articles

CyberResiliency

6 things I like about Gartner’s Cyber Resiliency Strategy

Posted August 27, 2015    Nigel Hedges

There were 6 key principles, or recommendations, that Gartner suggested were important drivers towards a great cyber resiliency posture. I commented more than once during the conference that many of these things were not new. They are all important recommendations that are best when placed together and given to senior management and the board – a critical element of organisations that desperately need to “get it”.

Tags:
,
powerbroker-difference-1

Why Customers Choose PowerBroker: Flexible Deployment Options

Posted August 26, 2015    Scott Lang

BeyondTrust commissioned a study of our customer base in early 2015 to determine how we are different from other alternatives in the market. What we learned was that there were six key differentiators that separate BeyondTrust from other solution providers in the market. We call it the PowerBroker difference,

Tags:
, ,
Mac-Security-Enterprise

On Demand Webinar: Security Risk of Mac OS X in the Enterprise

Posted August 20, 2015    BeyondTrust Software

In the last several years, Mac administrators have come to realize that they may be just as vulnerable to exploits and malware as most other operating systems. New malware and adware is released all the time, and there have been serious vulnerabilities patched by Apple in the past several years, some of which may afford attackers full control of your systems.

Tags:
, ,