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MS15-044 - Critical: Vulnerabilities in Microsoft Font Drivers Could Allow Remote Code Execution (3057110) - Version: 2.0

Microsoft Security Notifications - Wed, 05/20/2015 - 23:00
Severity Rating: Critical
Revision Note: V2.0 (May 21, 2015): Bulletin revised to announce the availability of a new update (3065979) that fixes a known issue that some customers experienced after installing the 3045171 security update on all supported editions of Windows 7/Windows 2008 R2 and earlier systems. The 3045171 security update causes customer applications to crash while attempting to create text-outline-based path objects using GDI+. Customers who are experiencing this known issue can correct the problem by installing the 3065979 update. See Microsoft Knowledge Base Article 3065979 for more information and download links.
Summary: 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.
Categories: Security Alerts

MS15-046 - Important: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3057181) - Version: 2.0

Microsoft Security Notifications - Mon, 05/18/2015 - 23:00
Severity Rating: Important
Revision Note: V2.0 (May 19, 2015): Bulletin revised to announce the release of the Microsoft Office for Mac 14.5.1 update. The release addresses a potential issue with Microsoft Outlook for Mac when customers install the Microsoft Office for Mac 14.5.0 update. Customers who have not already installed the 14.5.0 update should install the 14.5.1 update to be fully protected from this vulnerability. To avoid the possibility of future issues with Microsoft Outlook for Mac, Microsoft recommends that customers running Office for Mac software who have already successfully installed the 14.5.0 update also apply the 14.5.1 update even though they are already protected from this vulnerability. Customers running other Microsoft Office software do not need to take any action. See Microsoft Knowledge Base Article 3048688 for more information.
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

MS15-053 - Important: Vulnerabilities in JScript and VBScript Scripting Engines Could Allow Security Feature Bypass (3057263) - Version: 1.1

Microsoft Security Notifications - Tue, 05/12/2015 - 23:00
Severity Rating: Important
Revision Note: V1.1 (May 13, 2015): Revised bulletin to correct the updates replaced for Windows Server 2008 R2 (Server Core installation). 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 ASLR security feature bypasses in the JScript and VBScript scripting engines in Microsoft Windows. An attacker could use an ASLR bypass in conjunction with another vulnerability, such as a remote code execution vulnerability, that could take advantage of the ASLR bypass to run arbitrary code. For example, a remote code execution vulnerability that is blocked by ASLR could be exploited after a successful ASLR bypass.
Categories: Security Alerts

MS15-045 - Critical: Vulnerability in Windows Journal Could Allow Remote Code Execution (3046002) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: 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.
Categories: Security Alerts

MS15-049 - Important: Vulnerability in Silverlight Could Allow Elevation of Privilege (3058985) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: 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.
Categories: Security Alerts

MS15-048 - Important: Vulnerabilities in .NET Framework Could Allow Elevation of Privilege (3057134) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft .NET Framework. The most severe of the vulnerabilities could allow elevation of privilege if an attacker sends specially crafted data to a WinForms application running in partial trust.
Categories: Security Alerts

MS15-050 - Important: Vulnerability in Service Control Manager Could Allow Elevation of Privilege (3055642) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: 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 can first log on to the system and then run a specially crafted application designed to increase privileges.
Categories: Security Alerts

MS15-051 - Important: Vulnerabilities in Windows Kernel-Mode Drivers Could Allow Elevation of Privilege (3057191) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if an attacker could run 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 could not be exploited remotely or by anonymous users.
Categories: Security Alerts

MS15-052 - Important: Vulnerability in Windows Kernel Could Allow Security Feature Bypass (3050514) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker can log on to an affected system and run a specially crafted application.
Categories: Security Alerts

MS15-054 - Important: Vulnerability in Microsoft Management Console File Format Could Allow Denial of Service (3051768) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: 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.
Categories: Security Alerts

MS15-043 - Critical: Cumulative Security Update for Internet Explorer (3049563) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.0 (May 12, 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

MS15-047 - Important: Vulnerabilities in Microsoft SharePoint Server Could Allow Remote Code Execution (3058083) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: This security update resolves vulnerabilities in Microsoft Office server and productivity 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.
Categories: Security Alerts

MS15-055 - Important: Vulnerability in Schannel Could Allow Information Disclosure (3061518) - Version: 1.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V1.0 (May 12, 2015): Bulletin published.
Summary: 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 (DHE) 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.
Categories: Security Alerts

MS15-041 - Important: Vulnerability in .NET Framework Could Allow Information Disclosure (3048010) - Version: 2.0

Microsoft Security Notifications - Mon, 05/11/2015 - 23:00
Severity Rating: Important
Revision Note: V2.0 (May 12, 2015): V2.0 (May 12, 2015): Bulletin re-released to address issues with the 3037580 update for Microsoft .NET Framework 4.5/4.5.1/4.5.2 on affected editions of Microsoft Windows. Customers running these versions of .NET Framework are encouraged to install the new version of the 3037580 update to be protected from the vulnerability discussed in this bulletin. See Microsoft Knowledge Base Article 3037580 for more information.
Summary: This security update resolves a vulnerability in Microsoft .NET Framework. The vulnerability could allow information disclosure if an attacker sends a specially crafted web request to an affected server that has custom error messages disabled. An attacker who successfully exploited the vulnerability would be able to view parts of a web configuration file, which could expose sensitive information.
Categories: Security Alerts

MS15-032 - Critical: Cumulative Security Update for Internet Explorer (3038314) - Version: 2.0

Microsoft Security Notifications - Wed, 04/29/2015 - 23:00
Severity Rating: Critical
Revision Note: V2.0 (April 30, 2015): Updated bulletin to inform customers running Internet Explorer on Windows Server 2003 Service Pack 2 that the 3038314 update on the Microsoft Download Center was updated on April 22, 2015. Microsoft recommends that customers who installed the 3038314 update prior to April 22 should reinstall the update to be fully protected from the vulnerabilities discussed in this bulletin.
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

TA15-120A: Securing End-to-End Communications

US-CERT Security Alerts - Wed, 04/29/2015 - 20:00
Original release date: April 30, 2015
Systems Affected

Networked systems

Overview

Securing end-to-end communications plays an important role in protecting privacy and preventing some forms of man-in-the-middle (MITM) attacks. Recently, researchers described a MITM attack used to inject code, causing unsecured web browsers around the world to become unwitting participants in a distributed denial-of-service attack. That same code can be employed to deliver an exploit for a particular vulnerability or to take other arbitrary actions.

Description

A MITM attack occurs when a third party inserts itself between the communications of a client and a server. MITM attacks as a general class are not new. Classic MITM attacks (e.g., ARP Spoofing) focus on redirecting network communications. By definition, network infrastructure under attacker control is vulnerable to MITM. However, as technology evolves, new methods for performing MITM attacks evolve as well.

Currently, there is no single technology or configuration to prevent all MITM attacks. However, increasing the complexity with multiple layers of defense may raise the cost for the attacker. Increasing the attacker’s cost in time, effort, or money can be an effective deterrent to avoiding future network compromise.

Generally, encryption and digital certificates provide an effective safeguard against MITM attacks, assuring both the confidentiality and integrity of communications. As a result, modern MITM attacks have focused on taking advantage of weaknesses in the cryptographic infrastructure (e.g., certificate authorities (CAs), web browser certificate stores) or the encryption algorithms and protocols themselves.

Impact

MITM attacks are critical because of the wide range of potential impacts—these include the exposure of sensitive information, modification of trusted data, and injection of data.

Solution

Employing multiple network and browser protection methods forces an attacker to develop different tactics, techniques, and procedures to circumvent the new security configuration.

US-CERT recommends reviewing the following mitigations to reduce vulnerability to MITM attacks:

Update Transport Layer Security and Secure Socket Layer (TLS/SSL)

US-CERT recommends upgrading TLS to 1.1 or higher and ensuring TLS 1.0 and SSL 1, 2, 3.x are disabled, unless required. TLS 1.0 clients can fall back to version 3.0 of the SSL protocol, which is vulnerable to a padding oracle attack when Cypher-Block Chaining mode is used. This method is commonly referred to as the "POODLE" (Padding Oracle on Downgraded Legacy Encryption) attack. Vulnerable TLS implementations can be updated by applying the patch provided by the vendor. Vendor information is available in the National Vulnerability Database (NVD) entry for CVE-2014-3566 [1] or in CERT Vulnerability Note VU#577193 [2]. See US-CERT TA14-290A [3] for additional information on this vulnerability.

Utilize Certificate Pinning

Certificate pinning [4] is a method of associating X.509 certificate and its public key to a specific CA or root. Typically, certificates are validated by checking a verifiable chain of trust back to a trusted root certificate. Certificate pinning bypasses this validation process and allows the user to trust “this certificate only” or “trust only certificates signed by this certificate.” Please use the following resources to configure your browser for certificate pinning:

Microsoft Certificate Trust

The Microsoft Enhanced Mitigation Experience Toolkit (EMET) 5.2 employs a feature named "Certificate Trust" for SSL/TLS certificate pinning. This feature is intended to detect and stop MITM attacks that leverage Public Key Infrastructure. [5]

To use the Certificate Trust, you must provide a list of websites you want to protect and certificate pinning rules applicable to those websites. In order to do this, work with the Certificate Trust Configuration feature of the graphical application or use the Configuration Wizard to automatically configure EMET with the recommended settings. [6] Also, ensure period defaults are updated through patching.

Browser Certificate Pinning

Google Chrome and Mozilla Firefox, among others, perform certificate pinning. They conduct a variation of certificate pinning using the HTTP Strict Transport Security (HSTS), which pre-loads a specific set of public key hashes into the HSTS configuration, limiting valid certificates to only those with the specified indicated public key. Chrome uses HTTPS pins for most Google properties. It uses whitelisted public keys which include keys from Verisign, Google Internet Authority, Equifax, and GeoTrust. Thus, Chrome will not accept certificates for Google properties from other CAs.

Firefox 32 on desktop and later (Firefox 34 and later on Android) has the ability to use certificate pinning. It also has the ability to enforce built-in pinsets (mapping of public keys) information to domains. Firefox will pin all sites that Chrome already does, pin their own sites after audit and cleansing, and pin other popular sites that are already in good standing. Please visit this site on How to Use Pinning [7] and for more information.

Implement DNS-based Authentication of Named Entities (DANE)

DANE is a protocol that allows certificates (X.509) commonly used for TLS. DANE is bound to DNS which uses Domain Name System Security Extensions (DNSSEC). A working group in the Internet Engineering Task Force of DANE developed a new type of DNS record that allows a domain itself to sign statements about which entities are authorized to represent it. [8]

Google Chrome does not use DANE but uses an add-on [9] for support. Mozilla Firefox also uses an add-on [10] to check the existence and validity of DNSSEC.

Use Network Notary Servers

Network notary servers aim to improve the security of communications between computers and websites by enabling browsers to verify website authenticity without relying on CAs. CAs are often considered a security risk because they can be compromised. [11] As a result, browsers can deem fraudulent sites trustworthy and are left vulnerable to MITM attacks.

Each network notary server, or group of servers, is public and can be operated by public/private organizations or individuals. These servers regularly monitor websites and build a history of each site’s certificate data over time. When a browser equipped with a network notary add-on communicates with a website and obtains its certificate information, a user-designated network notary server supplies the browser with historical certificate data for that site. If certificate information provided by the website is inconsistent with the notary’s historical data, a MITM attack could be at play. [12]

References Revision History
  • April 30, 2015: Initial Release

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


Categories: Security Alerts

MS15-035 - Critical: Vulnerability in Microsoft Graphics Component Could Allow Remote Code Execution (3046306) - Version: 1.1

Microsoft Security Notifications - Tue, 04/28/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (April 29, 2015): Bulletin revised to correct update replacement entries for all affected software. This is an informational change only.
Summary: This security update resolves a vulnerability in Microsoft Windows. The vulnerability 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 browse to a working directory that contains a specially crafted Enhanced Metafile (EMF) image file. In all cases, however, an attacker would have no way to force users to take such actions; an attacker would have to convince users to do so, typically by way of enticements in email or Instant Messenger messages.
Categories: Security Alerts

TA15-119A: Top 30 Targeted High Risk Vulnerabilities

US-CERT Security Alerts - Tue, 04/28/2015 - 20:00
Original release date: April 29, 2015 | Last revised: May 06, 2015
Systems Affected

Systems running unpatched software from Adobe, Microsoft, Oracle, or OpenSSL. 

Overview

Cyber threat actors continue to exploit unpatched software to conduct attacks against critical infrastructure organizations. As many as 85 percent of targeted attacks are preventable [1].

This Alert provides information on the 30 most commonly exploited vulnerabilities used in these attacks, along with prevention and mitigation recommendations.

It is based on analysis completed by the Canadian Cyber Incident Response Centre (CCIRC) and was developed in collaboration with our partners from Canada, New Zealand, the United Kingdom, and the Australian Cyber Security Centre.

Description

Unpatched vulnerabilities allow malicious actors entry points into a network. A set of vulnerabilities are consistently targeted in observed attacks.

Impact

A successful network intrusion can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:

  • Temporary or permanent loss of sensitive or proprietary information,
  • Disruption to regular operations,
  • Financial losses relating to restoring systems and files, and
  • Potential harm to an organization’s reputation.
Solution Maintain up-to-date software

The attack vectors frequently used by malicious actors such as email attachments, compromised “watering hole” websites, and other tools often rely on taking advantage of unpatched vulnerabilities found in widely used software applications. Patching is the process of repairing vulnerabilities found in these software components.

It is necessary for all organizations to establish a strong ongoing patch management process to ensure the proper preventive measures are taken against potential threats. The longer a system remains unpatched, the longer it is vulnerable to being compromised. Once a patch has been publicly released, the underlying vulnerability can be reverse engineered by malicious actors in order to create an exploit. This process has been documented to take anywhere from 24-hours to four days. Timely patching is one of the lowest cost yet most effective steps an organization can take to minimize its exposure to the threats facing its network.

Patch commonly exploited vulnerabilities

Executives should ensure their organization’s information security professionals have patched the following software vulnerabilities. Please see patching information for version specifics.

MicrosoftCVEAffected ProductsPatching InformationCVE-2006-3227​Internet Explorer​Microsoft Malware Protection Encyclopedia EntryCVE-2008-2244Office WordMicrosoft Security Bulletin MS08-042CVE-2009-3129Office
Office for Mac
Open XML File Format Converter for Mac
Office Excel Viewer
Excel
Office Compatibility Pack for Word, Excel, and PowerPointMicrosoft Security Bulletin MS09-067​CVE-2009-3674​Internet Explorer​Microsoft Security Bulletin MS09-072CVE-2010-0806​​Internet Explorer​Microsoft Security Bulletin MS10-018CVE-2010-3333Office
Office for Mac
Open XML File Format Converter for MacMicrosoft Security Bulletin MS10-087CVE-2011-0101ExcelMicrosoft Security Bulletin MS11-021CVE-2012-0158Office
SQL Server
BizTalk Server
Commerce Server
Visual FoxPro
Visual BasicMicrosoft Security Bulletin MS12-027CVE-2012-1856Office
SQL Server
Commerce Server
Host Integration Server
Visual FoxPro Visual BasicMicrosoft Security Bulletin MS12-060​CVE-2012-4792​Internet Explorer​Microsoft Security Bulletin MS13-008CVE-2013-0074​​Silverlight and Developer Runtime​Microsoft Security Bulletin MS13-022CVE-2013-1347​Internet Explorer​Microsoft Security Bulletin MS13-038CVE-2014-0322​​​Internet Explorer​Microsoft Security Bulletin MS14-012CVE-2014-1761Microsoft Word
Office Word Viewer
Office Compatibility Pack
Office for Mac
Word Automation Services on SharePoint Server
Office Web Apps
Office Web Apps ServerMicrosoft Security Bulletin MS14-017​CVE-2014-1776​Internet Explorer​Microsoft Security Bulletin MS14-021CVE-2014-4114​Windows​Microsoft Security Bulletin MS14-060OracleCVEAffected ProductsPatching InformationCVE-2012-1723Java Development Kit, SDK, and JREOracle Java SE Critical Patch Update Advisory - June 2012CVE-2013-2465Java Development Kit and JREOracle Java SE Critical Patch Update Advisory - June 2013AdobeCVEAffected ProductsPatching Information​CVE-2009-3953Reader Acrobat ​Adobe Security Bulletin APSB10-02​​CVE-2010-0188​Reader Acrobat​Adobe Security Bulletin APSB10-07CVE-2010-2883Reader Acrobat ​​Adobe Security Bulletin APSB10-21CVE-2011-0611​Flash Player
AIR
Reader
AcrobatAdobe Security Bulletin APSB11-07
Adobe Security Bulletin APSB11-08​​CVE-2011-2462Reader Acrobat ​​Adobe Security Bulletin APSB11-30​CVE-2013-0625ColdFusion​​Adobe Security Bulletin APSB13-03CVE-2013-0632​ColdFusion​Adobe Security Bulletin APSB13-03​CVE-2013-2729​Reader Acrobat​Adobe Security Bulletin APSB13-15​CVE-2013-3336​ColdFusion​Adobe Security Bulletin APSB13-13CVE-2013-5326​ColdFusion​Adobe Security Bulletin APSB13-27CVE-2014-0564Flash Player
AIR
AIR SDK & CompilerAdobe Security Bulletin APSB14-22OpenSSLCVEAffected ProductsPatching InformationCVE-2014-0160OpenSSLCERT Vulnerability Note VU#720951 Implement the following four mitigation strategies.

As part of a comprehensive security strategy, network administrators should implement the following four mitigation strategies, which can help prevent targeted cyber attacks.

RankingMitigation StrategyRationale1Use application whitelisting to help prevent malicious software and unapproved programs from running.Application whitelisting is one of the best security strategies as it allows only specified programs to run, while blocking all others, including malicious software.2Patch applications such as Java, PDF viewers, Flash, web browsers and Microsoft Office.Vulnerable applications and operating systems are the target of most attacks. Ensuring these are patched with the latest updates greatly reduces the number of exploitable entry points available to an attacker.3Patch operating system vulnerabilities.4Restrict administrative privileges to operating systems and applications based on user duties.Restricting these privileges may prevent malware from running or limit its capability to spread through the network.

It is recommended that users review US-CERT Security Tip (ST13-003) and CCIRC’s Mitigation Guidelines for Advanced Persistent Threats for additional background information and to assist in the detection of, response to, and recovery from malicious activity linked to advance persistent threats [2, 3].

 

References Revision History
  • April 29, 2015: Initial release

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


Categories: Security Alerts

MS15-034 - Critical: Vulnerability in HTTP.sys Could Allow Remote Code Execution (3042553) - Version: 1.1

Microsoft Security Notifications - Tue, 04/21/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (April 22, 2015): Bulletin revised to correct the update replacement entries for Windows 8 and Windows Server 2012 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 a vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if an attacker sends a specially crafted HTTP request to an affected Windows system.
Categories: Security Alerts

MS15-033 - Critical: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3048019) - Version: 1.1

Microsoft Security Notifications - Mon, 04/20/2015 - 23:00
Severity Rating: Critical
Revision Note: V1.1 (April 21, 2015): Revised bulletin to announce a detection change for the 2553428 update for supported editions of Microsoft Word 2010. 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
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