Skip to main content
it helpdesk support

Patch Tuesday Report for May 12, 2015

Patch Tuesday Report for May 12, 2015

May 12, 2015

It’s another Patch Tuesday! There’s been rumors that Microsoft is going to end Patch Tuesday with the release of Windows 10 in the summer. These rumors have been brought on by a recent announcement by Microsoft that its new update service, Windows Update for Business (WUFB), will deliver control over the constant rollout of new features and updates for Windows 10. Additionally, Microsoft promises that WUFB will take advantage of Windows 10‘s new peer-to-peer updating delivery methods and still integrate with SCCM, WSUS, the Enterprise Mobility Suite, and Microsoft Intune. Patch Tuesday will continue for the foreseeable future for those of us who aren’t using Windows Update for Business.

Today Microsoft released 13 bulletins, three of which are rated as Critical and ten rated as Important, that address a total of 48 vulnerabilities. All three critical security updates resolve remote code execution (RCE) vulnerabilities. The associated KB articles have been published, and we want to give you a quick heads-up about what to expect for this patch cycle.

This month’s updates including a list of security fixes in a cumulative update for Internet  Explorer as well as an important patch for Microsoft Windows, .NET Framework, Office, Lync, and Silverlight that corrects how the Windows DirectWrite library improperly handles OpenType and TrueType fonts. There’s also a security update that addresses a vulnerability common to all supported version of Office and SharePoint that could allow remote code execution if a user opens a specially crafted Office file; the update corrects how Microsoft Office parses specially crafted files, by correcting how Office handles files in memory and helping to ensure that SharePoint Server properly sanitizes user input.

Summary for Patch Tuesday May 12, 2015:

For Microsoft Products, there are a total of thirteen bulletins, with five of them fixing Remote Code Execution holes in Microsoft Windows, Office, Internet Explorer, .NET Framework, SharePoint, Lync, and Silverlight; four address Elevation of Privilege in Microsoft Windows, .NET Framework, and Silverlight; one addresses a Denial of Service vulnerability in Microsoft Windows; two address Security Feature Bypasses in Microsoft Windows; andone addresses Information Disclosure in Secure Channel with the use of a weak Diffie-Hellman Ephemeral (DHE) key length of 512 bits in an encrypted TLS session.

There are also security updates for Adobe Flash Player and Adobe Reader.


Bulletin ID: MS15-043

Cumulative Security Update for Internet Explorer (3049563)
This security update resolves vulnerabilities in Internet Explorer. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted webpage using Internet Explorer. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Maximum Severity Rating and Vulnerability Impact: Critical
Remote Code Execution
Restart Requirement: Requires Restart
Affected Software: Microsoft Windows, Internet Explorer


Bulletin ID: MS15-044

Vulnerabilities in Microsoft Font Drivers Could Allow Remote Code Execution (3057110)
This security update resolves vulnerabilities in Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Microsoft Lync, and Microsoft Silverlight. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted document or visits an untrusted webpage that contains embedded TrueType fonts.
Maximum Severity Rating and Vulnerability Impact: Critical
Remote Code Execution
Restart Requirement: May Require Restart
Affected Software: Microsoft Windows, Microsoft .NET Framework, Microsoft Office, Microsoft Lync, Microsoft Silverlight


Bulletin ID: MS15-045

Vulnerability in Windows Journal Could Allow Remote Code Execution (3046002)
This security update resolves vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if a user opens a specially crafted Journal file. 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.
Maximum Severity Rating and Vulnerability Impact: Critical
Remote Code Execution
Restart Requirement: May Require Restart
Affected Software: Microsoft Windows


Bulletin ID: MS15-046

Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3057181)
This security update resolves vulnerabilities in Microsoft Office. The most severe of the vulnerabilities could allow remote code execution if a user opens a specially crafted Microsoft Office file. An attacker who successfully exploited the vulnerabilities could run arbitrary code in the context of the current user. Customers whose accounts are configured to have fewer user rights on the system could be less impacted than those who operate with administrative user rights.
Maximum Severity Rating and Vulnerability Impact: Important
Remote Code Execution
Restart Requirement: May Require Restart
Affected Software: Microsoft Office


Bulletin ID: MS15-047

Vulnerabilities in Microsoft SharePoint Server Could Allow Remote Code Execution (3058083)
This security update resolves vulnerabilities in Microsoft Office server software. The vulnerabilities could allow remote code execution if an authenticated attacker sends specially crafted page content to a SharePoint server. An attacker who successfully exploited these vulnerabilities could run arbitrary code in the security context of the W3WP service account on the target SharePoint site.
Maximum Severity Rating and Vulnerability Impact: Important
Remote Code Execution
Restart Requirement: May Require Restart
Affected Software: Microsoft Server Software


Bulletin ID: MS15-048

Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3057134)
This security update resolves vulnerabilities in Microsoft .NET Framework. The most severe of the vulnerabilities could allow elevation of privilege if a user installs a specially crafted partial trust application.
Maximum Severity Rating and Vulnerability Impact: Important
Elevation of Privilege
Restart Requirement: May Require Restart
Affected Software: Microsoft Windows, Microsoft .NET Framework


Bulletin ID: MS15-049

Vulnerability in Silverlight Could Allow Elevation of Privilege (3058985)
This security update resolves a vulnerability in Microsoft Silverlight. The vulnerability could allow elevation of privilege if a specially crafted Silverlight application is run on an affected system. To exploit the vulnerability an attacker would first have to log on to the system or convince a logged on user to execute the specially crafted application.
Maximum Severity Rating and Vulnerability Impact: Important
Elevation of Privilege
Restart Requirement: Does Not Require Restart
Affected Software: Microsoft Silverlight


Bulletin ID: MS15-050

Vulnerability in Service Control Manager Could Allow Elevation of Privilege (3055642)
This security update resolves a vulnerability in Windows Service Control Manager (SCM), which is caused when SCM improperly verifies impersonation levels. The vulnerability could allow elevation of privilege if an attacker first logs on to the system and then runs a specially crafted application designed to increase privileges.
Maximum Severity Rating and Vulnerability Impact: Important
Elevation of Privilege
Restart Requirement: Requires Restart
Affected Software: Microsoft Windows


Bulletin ID: MS15-051

Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (3057191)
This security update resolves vulnerabilities in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if an attacker logs on locally and runs arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. An attacker must have valid logon credentials and be able to log on locally to exploit this vulnerability. The vulnerability cannot be exploited remotely or by anonymous users.
Maximum Severity Rating and Vulnerability Impact: Important
Elevation of Privilege
Restart Requirement: Requires Restart
Affected Software: Microsoft Windows


Bulletin ID: MS15-052

Vulnerability in Windows Kernel Could Allow Security Feature Bypass (3050514)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker logs on to an affected system and runs a specially crafted application.
Maximum Severity Rating and Vulnerability Impact: Important
Security Feature Bypass
Restart Requirement: Requires Restart
Known Issues: 3050514
Affected Software: Microsoft Windows


Bulletin ID: MS15-053

Vulnerabilities in JScript and VBScript Scripting Engines Could Allow Security Feature Bypass (3057263)
This security update resolves ASLR security feature bypasses in the JScript and VBScript scripting engines in Microsoft Windows. An attacker could use one of these ASLR bypasses in conjunction with another vulnerability, such as a remote code execution vulnerability, to more reliably run arbitrary code on a target system.
Maximum Severity Rating and Vulnerability Impact: Important
Security Feature Bypass
Restart Requirement: May Require Restart
Affected Software: Microsoft Windows


Bulletin ID: MS15-054

Vulnerability in Microsoft Management Console File Format Could Allow Denial of Service (3051768)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if a remote, unauthenticated attacker convinces a user to open a share containing a specially crafted .msc file. However, an attacker would have no way of forcing a user to visit the share or view the file.
Maximum Severity Rating and Vulnerability Impact: Important
Denial of Service
Restart Requirement: Requires Restart
Affected Software: Microsoft Windows


Bulletin ID: MS15-055

Vulnerability in Schannel Could Allow Information Disclosure (3061518)
This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow information disclosure when Secure Channel (Schannel) allows the use of a weak Diffie-Hellman ephemeral (DFE) key length of 512 bits in an encrypted TLS session. Allowing 512-bit DHE keys makes DHE key exchanges weak and vulnerable to various attacks. A server needs to support 512-bit DHE key lengths for an attack to be successful; the minimum allowable DHE key length in default configurations of Windows servers is 1024 bits.
Maximum Severity Rating and Vulnerability Impact: Important
Information Disclosure
Restart Requirement: Requires Restart
Known Issues: 3061518
Affected Software: Microsoft Windows


Critical Fix For Adobe Flash Player

It is also critical to patch Adobe Flash Player as there are several fixes that resolve several issues including memory corruption and leak vulnerabilities, validation bypass issues, security bypass vulnerabilities, as well as integer and heap overflow vulnerabilities. Adobe recommends users update their software installations to the latest supported versions APSB15-09. The latest updates resolve 18 vulnerabilities.

We'll take care of every detail.

Even if you don't know exactly what you need, our experts make it easy to talk about your project and work out the requirements. We'll quickly help frame it up and add some structure so it can be properly estimated and ultimately developed and delivered.