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MS15-022 - Critical: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3038999) - Version: 1.1

Microsoft Security Notifications - Wed, 03/25/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (March 26, 2015): Bulletin revised to correct the update replacement entry for Microsoft Excel 2007 Service Pack 3 in the Affected Software table. This is an informational change only. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: 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.
Categories: Security Alerts

MS15-031 - Important: Vulnerability in Schannel Could Allow Security Feature Bypass (3046049) - Version: 1.1

Microsoft Security Notifications - Mon, 03/23/2015 - 23:00
Severity Rating: Important
Revision Note: V1.1 (March 24, 2015): Revised bulletin to add an FAQ directing customers to Microsoft Knowledge Base Article 3050509 for instructions on how to disable EXPORT ciphers after installing the update on Windows Server 2003 systems.
Summary: This security update resolves a vulnerability in Microsoft Windows that facilitates exploitation of the publicly disclosed FREAK technique, an industry-wide issue that is not specific to Windows operating systems. The vulnerability could allow a man-in-the-middle (MiTM) attacker to force the downgrading of the key length of an RSA key to EXPORT-grade length in a TLS connection. Any Windows system using Schannel to connect to a remote TLS server with an exploitable cipher suite is affected.
Categories: Security Alerts

MS15-025 - Important: Vulnerabilities in Windows Kernel Could Allow Elevation of Privilege (3038680) - Version: 2.0

Microsoft Security Notifications - Sun, 03/15/2015 - 23:00
Severity Rating: Important
Revision Note: V2.0 (March 16, 2015): To address a packaging issue for customers who are repeatedly reoffered security update 3033395 when installed on systems running supported editions of Windows Server 2003, Microsoft released update 3033395-v2 for all supported editions of Windows Server 2003. Customers who have not already installed the 3033395 update should install update 3033395-v2 to be fully protected from this vulnerability. To avoid the possibility of future detection logic problems, Microsoft recommends that customers running Windows Server 2003 who have already successfully installed the 3033395 update also apply update 3033395-v2 even though they are already protected from this vulnerability. Customers running other Microsoft operating systems are not affected by this rerelease and do not need to take any action. See Microsoft Knowledge Base Article 3033395 for more information.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow elevation of privilege if an attacker logs on to an affected system and runs a specially crafted application. An attacker who successfully exploited the vulnerability could run arbitrary code in the security context of the account of another user who is logged on to the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts potentially with full user rights.
Categories: Security Alerts

MS15-027 - Important: Vulnerability in NETLOGON Could Allow Spoofing (3002657) - Version: 2.0

Microsoft Security Notifications - Sun, 03/15/2015 - 23:00
Severity Rating: Important
Revision Note: V2.0 (March 16, 2015): To address a connectivity issue with update 3002657 when installed on supported editions of Windows Server 2003, Microsoft released update 3002657-v2 for all supported editions of Windows Server 2003. Customers who have not already installed the 3002657 update should install update 3002657-v2 to be fully protected from this vulnerability. To avoid the possibility of future detection logic problems, Microsoft recommends that customers running Windows Server 2003 who have already successfully installed the 3002657 update also apply update 3002657-v2 even though they are already protected from this vulnerability. Customers running other Microsoft operating systems are not affected by this rerelease and do not need to take any action. See Microsoft Knowledge Base Article 3002657 for more information.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow spoofing if an attacker who is logged on to a domain-joined system runs a specially crafted application that could establish a connection with other domain-joined systems as the impersonated user or system. The attacker must be logged on to a domain-joined system and be able to observe network traffic.
Categories: Security Alerts

MS15-011 - Critical: Vulnerability in Group Policy Could Allow Remote Code Execution (3000483) - Version: 1.1

Microsoft Security Notifications - Tue, 03/10/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (March 11, 2015): Bulletin revised to correct the updates replaced for all supported editions of Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2. This is an informational change only. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. A remote code execution vulnerability exists in how group policy receives and applies connection data when a domain-joined system connects to a domain controller. An attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
Categories: Security Alerts

MS15-026 - Important: Vulnerabilities in Microsoft Exchange Server Could Allow Elevation of Privilege (3040856) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Exchange Server. The most severe of the vulnerabilities could allow elevation of privilege if a user clicks a specially crafted URL that takes them to a targeted Outlook Web App site. An attacker would have no way to force users to visit a specially crafted website. Instead, an attacker would have to convince them to visit the website, typically by getting them to click a link in an instant messenger or email message that takes them to the attacker's website, and then convince them to click the specially crafted URL.
Categories: Security Alerts

MS15-019 - Critical: Vulnerability in VBScript Scripting Engine Could Allow Remote Code Execution (3040297) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in the VBScript scripting engine in Microsoft Windows. The vulnerability could allow remote code execution if a user visits a specially crafted website. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited this vulnerability could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
Categories: Security Alerts

MS15-018 - Critical: Cumulative Security Update for Internet Explorer (3032359) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: 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.
Categories: Security Alerts

MS15-021 - Critical: Vulnerabilities in Adobe Font Driver Could Allow Remote Code Execution (3032323) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if a user views a specially crafted file or website. An attacker who successfully exploited these vulnerabilities could gain the same user rights as the current user. If the current user is logged on with administrative user rights, an attacker who successfully exploited these vulnerabilities could take complete control of an affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. 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.
Categories: Security Alerts

MS15-030 - Important: Vulnerability in Remote Desktop Protocol Could Allow Denial of Service (3039976) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow denial of service if an attacker creates multiple Remote Desktop Protocol (RDP) sessions that fail to properly free objects in memory. By default, RDP is not enabled on any Windows operating system. Systems that do not have RDP enabled are not at risk.
Categories: Security Alerts

MS15-020 - Critical: Vulnerabilities in Microsoft Windows Could Allow Remote Code Execution (3041836) - Version: 1.1

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (March 10, 2015): Bulletin revised to better explain the attack vector for the DLL Planting Remote Code Execution Vulnerability (CVE-2015-0096).
Summary: This security update resolves two privately reported vulnerabilities in Microsoft Windows. The vulnerabilities could allow remote code execution if an attacker successfully convinces a user to browse to a specially crafted website, open a specially crafted file, or open a file in a working directory that contains a specially crafted DLL file.
Categories: Security Alerts

MS15-023 - Important: Vulnerabilities in Kernel-Mode Driver Could Allow Elevation of Privilege (3034344) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves four privately reported vulnerabilities in Microsoft Windows. The most severe of these vulnerabilities could allow security feature bypass if an attacker logs on to the system and runs a specially crafted application designed to increase privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full administrative rights.
Categories: Security Alerts

MS15-024 - Important: Vulnerability in PNG Processing Could Allow Information Disclosure (3035132) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if an attacker runs a specially crafted application on an affected system or convinces a user to visit a website that contains specially crafted PNG images.
Categories: Security Alerts

MS15-029 - Important: Vulnerability in Windows Photo Decoder Component Could Allow Information Disclosure (3035126) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow information disclosure if a user browses to a website containing a specially crafted JPEG XR (.JXR) image. This vulnerability would not allow an attacker to execute code or to elevate their user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system.
Categories: Security Alerts

MS15-028 - Important: Vulnerability in Windows Task Scheduler Could Allow Security Feature Bypass (3030377) - Version: 1.0

Microsoft Security Notifications - Mon, 03/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (March 10, 2015): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow Security Feature Bypass if a user runs a specially crafted application that is designed to cause Task Scheduler to improperly validate impersonation-level security.
Categories: Security Alerts

MS15-009 - Critical: Security Update for Internet Explorer (3034682) - Version: 1.1

Microsoft Security Notifications - Tue, 03/03/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (March 4, 2015): Revised bulletin to clarify what additional updates will be installed, and how they will be installed, when security update 3021952 is installed on systems running Internet Explorer 9, Internet Explorer 10, or Internet Explorer 11. See the Update FAQ for more information. This is an informational change only. There were no changes to the update files. Customers who have already successfully updated their systems do not need to take any action.
Summary: This security update resolves one publicly disclosed and forty privately reported vulnerabilities in Internet Explorer. The most severe of these 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.
Categories: Security Alerts

TA15-051A: Lenovo Superfish Adware Vulnerable to HTTPS Spoofing

US-CERT Security Alerts - Fri, 02/20/2015 - 04:07
Original release date: February 20, 2015 | Last revised: February 24, 2015
Systems Affected

Lenovo consumer PCs that have Superfish VisualDiscovery installed.

Overview

Superfish adware installed on some Lenovo PCs install a non-unique trusted root certification authority (CA) certificate, allowing an attacker to spoof HTTPS traffic.

Description

Starting in September 2014, Lenovo pre-installed Superfish VisualDiscovery spyware on some of their PCs. This software intercepts users’ web traffic to provide targeted advertisements.  In order to intercept encrypted connections (those using HTTPS), the software installs a trusted root CA certificate for Superfish. All browser-based encrypted traffic to the Internet is intercepted, decrypted, and re-encrypted to the user’s browser by the application – a classic man-in-the-middle attack.  Because the certificates used by Superfish are signed by the CA installed by the software, the browser will not display any warnings that the traffic is being tampered with.  Since the private key can easily be recovered from the Superfish software, an attacker can generate a certificate for any website that will be trusted by a system with the Superfish software installed.  This means websites, such as banking and email, can be spoofed without a warning from the browser.

Although Lenovo has stated they have discontinued the practice of pre-installing Superfish VisualDiscovery, the systems that came with the software already installed will continue to be vulnerable until corrective actions have been taken.

To detect a system with Superfish installed, look for a HTTP GET request to:

superfish.aistcdn.com

The full request will look like:

http://superfish.aistcdn.com/set.php?ID=[GUID]&Action=[ACTION]

Where [ACTION] is at least 1, 2, or 3.  1 and then 2 are sent when a computer is turned on. 3 is sent when a computer is turned off.    

Superfish uses a vulnerable SSL decryption library by Komodia. Other applications that use the library may be similarly affected. Please refer to CERT Vulnerability Note VU#529496 for more details and updates.

Impact

A machine with Superfish VisualDiscovery installed will be vulnerable to SSL spoofing attacks without a warning from the browser.

Solution

Uninstall Superfish VisualDiscovery and associated root CA certificate

Users should uninstall Superfish VisualDiscovery. Lenovo has provided a tool to uninstall Superfish and remove all associated certificates.

It is also necessary to remove affected root CA certificates. Simply uninstalling the software does not remove the certificate. Microsoft provides guidance on deleting and managing certificates in the Windows certificate store. In the case of Superfish VisualDiscovery, the offending trusted root certification authority certificate is issued to “Superfish, Inc.”

Mozilla provides similar guidance for their software, including the Firefox and Thunderbird certificate stores.

References Revision History
  • February 20, 2015: Initial release
  • February 20, 2015: Clarified software release dates
  • February 24, 2015: Updated description and solution details

This product is provided subject to this Notification and this Privacy & Use policy.


Categories: Security Alerts

MS15-010 - Critical: Vulnerabilities in Windows Kernel-Mode Driver Could Allow Remote Code Execution (3036220) - Version: 1.1

Microsoft Security Notifications - Tue, 02/17/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (February 18, 2015): Bulletin revised to add an Update FAQ that explains why there are two packages on the Microsoft Download Center pages for affected editions of Windows Server 2003, Windows Server 2008, and Windows Vista. The additional package (3037639) is not needed to be protected from the vulnerabilities addressed by the 3013455 update; it simply corrects a text quality problem that some customers experienced after installing the 3013455 update on the indicated systems.
Summary: This security update resolves six privately reported vulnerabilities in Microsoft Windows. The most severe of the vulnerabilities could allow remote code execution if an attacker convinces a user to open a specially crafted document or to visit an untrusted website that contains embedded TrueType fonts. To exploit the vulnerability an attacker would need to convince a user to open a specially crafted document or visit an untrusted website that contains embedded TrueType Fonts.
Categories: Security Alerts

MS15-012 - Important: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3032328) - Version: 1.0

Microsoft Security Notifications - Mon, 02/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (February 10, 2015): Bulletin published.
Summary: This security update resolves three privately reported vulnerabilities in Microsoft Office. 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 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.
Categories: Security Alerts

MS15-013 - Important: Vulnerability in Microsoft Office Could Allow Security Feature Bypass (3033857) - Version: 1.0

Microsoft Security Notifications - Mon, 02/09/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (February 10, 2015): Bulletin published.
Summary: This security update resolves one publicly disclosed vulnerability in Microsoft Office. The vulnerability could allow security feature bypass if a user opens a specially crafted Microsoft Office file. The security feature bypass by itself does not allow arbitrary code execution. However, an attacker could use this security feature bypass vulnerability in conjunction with another vulnerability, such as a remote code execution vulnerability, to run arbitrary code.
Categories: Security Alerts
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