__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Vulnerabilities in Microsoft Visio (927051) [Microsoft Security Bulletin (MS07-030)] June 13, 2007 12:00 GMT Number R-272 [REVISED 22 June 2007] [REVISED 17 Jan 2008] ______________________________________________________________________________ PROBLEM: A remote code execution vulnerability exists in Microsoft Visio as a result of the way itincorrectly handles the parsing of packed objects within the Visio file format. PLATFORM: Microsoft Visio 2002 Microsoft Visio 2003 Storage Management Appliance (SMA) v2.1 software running on Storage Management Appliance I, II, III DAMAGE: Could potentially allow remote code execution if a user visited a malicious web site or opened a specially crafted Visio attachment included in an e-mail message. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Could potentially allow remote code ASSESSMENT: execution and take complete control of an affected system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/r-272.shtml ORIGINAL BULLETIN: http://www.microsoft.com/technet/security/Bulletin/MS07-030.mspx ADDITIONAL LINK: Visit Hewlett-Packard's Subscription Service for: HPSBST02231 SSRT071438 rev. 1 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-0934 CVE-2007-0936 ______________________________________________________________________________ REVISION HISTORY: 06/22/2007 - revised R-272 to add a link to HPSBST02231 SSRT071438 rev.1 for Storage Management Appliance (SMA) v2.1 software running on Storage Management Appliance I, II, III. 01/17/2008 - revised R-272 to reflect changes Microsoft has made in MS07-030 where they added KB article information to the Known Issues area of the General Information section. [***** Start Microsoft Security Bulletin (MS07-030) *****] Microsoft Security Bulletin MS07-030 - Important Vulnerabilities in Microsoft Visio Could Allow Remote Code Execution (927051) Published: June 12, 2007 | Updated: January 16, 2008 Version: 1.1 General Information Executive Summary Executive Summary This important update resolves two privately reported vulnerabilities in addition to other security issues identified during the course of the investigation. The privately reported vulnerabilities could allow remote code execution if a user opened a specially crafted Visio 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. User interaction is required to exploit these vulnerabilities. This is an important security update for supported versions of Microsoft Visio 2002 and Microsoft Office Visio 2003. For more information, see the subsection, Affected and Non-Affected Software, in this section. This security update addresses the vulnerabilities by modifying the way that Microsoft Visio handles specially crafted Visio files. For more information about the vulnerabilities, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information. Recommendation. Microsoft recommends that customers should apply the update at the earliest opportunity. Known Issues. Microsoft Knowledge Base Article 927051 documents currently known issues that customers may experience when installing this security update. The article also documents recommended solutions for these issues. Top of section Affected and Non-Affected Software In the following tables of affected and non-affected software, software versions that are not listed are past their support lifecycle. To determine the support lifecycle for your product and version, visit Microsoft Support Lifecycle. Affected Software Office Suite and Other Affected Software Application Maximum Security Impact Aggregate Severity Rating Bulletins Replaced by This Update Microsoft Visio 2002 Service Pack 2 Remote Code Execution Important None Microsoft Office 2003 Microsoft Visio 2003 Service Pack 2 Remote Code Execution Important None Non-Affected Software Office Suite Application 2007 Microsoft Office System Microsoft Office Visio 2007 Top of section Vulnerability Information Severity Ratings and Vulnerability Identifiers Vulnerability Severity Rating and Maximum Security Impact by Affected Software Affected Software Visio Version Memory Corruption Vulnerability – CVE-2007-0934 Visio Document Packaging Vulnerability – CVE-2007-0936 Aggregate Severity Rating Microsoft Visio 2002 Important Remote Code Execution Important Remote Code Execution Important Microsoft Visio 2003 Important Remote Code Execution Important Remote Code Execution Important Top of section Version Number Memory Corruption Vulnerability - CVE-2007-0934 A remote code execution vulnerability exists in the way Microsoft Visio handles a specially crafted version number in a Visio (.VSD, VSS, or .VST) file. An attacker could exploit this vulnerability when Visio does not correctly validate the version number field when processing the contents of a file. Such a specially crafted file might be included as an e-mail attachment, or hosted on a malicious or compromised Web site. To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2007-0934. Mitigating Factors for Version Number Memory Corruption Vulnerability - CVE-2007-0934 Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation: • In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability In addition, Web sites that accept or host user-provided content, or compromised Web sites and advertisement servers could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes users to the attacker's Web site. • An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. 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. • The vulnerability cannot be exploited automatically through e-mail. For an attack to be successful a user must open an attachment that is sent in an e-mail message. • Microsoft Office Visio 2007 is not affected by this vulnerability. Visio Document Packaging Vulnerability - CVE-2007-0936 A remote code execution vulnerability exists in Microsoft Visio as a result of the way it incorrectly handles the parsing of packed objects within the Visio file format. An attacker could exploit this vulnerability by constructing a malicious Visio (.VSD, VSS, or .VST) file that could potentially allow remote code execution if a user visited a malicious Web site or opened a specially crafted Visio attachment included in an e-mail message. An attacker who successfully exploited this vulnerability could take complete control of an affected system. To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2007-0936. Mitigating Factors for Visio Document Packaging Vulnerability - CVE-2007-0936 Mitigation refers to a setting, common configuration, or general best-practice, existing in a default state, that could reduce the severity of exploitation of a vulnerability. The following mitigating factors may be helpful in your situation: • In a Web-based attack scenario, an attacker could host a Web site that contains a Web page that is used to exploit this vulnerability In addition, Web sites that accept or host user-provided content, or compromised Web sites and advertisement servers could contain specially crafted content that could exploit this vulnerability. In all cases, however, an attacker would have no way to force users to visit these Web sites. Instead, an attacker would have to persuade users to visit the Web site, typically by getting them to click a link in an e-mail message or Instant Messenger message that takes users to the attacker's Web site. • An attacker who successfully exploited this vulnerability could gain the same user rights as the local user. 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. • The vulnerability cannot be exploited automatically through e-mail. For an attack to be successful a user must open an attachment that is sent in an e-mail message. • Microsoft Office Visio 2007 is not affected by this vulnerability. Top of section Security Update Deployment Affected Software Visio 2003 Service Pack 2 Other Information Acknowledgments Microsoft thanks the following for working with us to help protect customers: Chris Ries of Vigilant Minds for reporting the Visio Document Packaging Vulnerability – (CVE-2007-0936). Top of section Support • Customers in the U.S. and Canada can receive technical support from Microsoft Product Support Services at 1-866-PCSAFETY. There is no charge for support calls that are associated with security updates. • International customers can receive support from their local Microsoft subsidiaries. There is no charge for support that is associated with security updates. For more information about how to contact Microsoft for support issues, visit the International Support Web site. Top of section Disclaimer The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. Top of section Revisions • V1.0 (June 12, 2007): Bulletin published. • V1.1 (January 16, 2008): Bulletin updated to add KB article information to the Known Issues area of the General Information section. [***** End Microsoft Security Bulletin (MS07-030) *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Microsoft for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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