12 July 2006
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0453 -- [Win] MS06-039 Vulnerabilities in Microsoft Office Filters Could Allow Remote Code Execution 12 July 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Microsoft Office 2003, XP and 2000 Microsoft Project 2003, 2002 and 2000 OneNote 2003 Microsoft Works Suite 2006, 2005 and 2004 Publisher: Microsoft Operating System: Windows Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2006-0007 CVE-2006-0033 Original Bulletin: http://www.microsoft.com/technet/security/Bulletin/MS06-039.mspx - --------------------------BEGIN INCLUDED TEXT-------------------- MS06-039 - Microsoft Office Remote Code Execution Using a Malformed PNG/GIF CVE-2006-0033 CVE-2006-0007 Affected Software: - Microsoft Office 2003 Service Pack 1 or Service Pack 2 - Microsoft Project 2003 - OneNote 2003 - Microsoft Office XP Service Pack 3 - Microsoft Office 2000 Service Pack 3 - Microsoft Project 2002 - Microsoft Project 2000 - Microsoft Works Suites: - Microsoft Works Suite 2004 - Microsoft Works Suite 2005 - Microsoft Works Suite 2006 Non- Affected Software: - Microsoft Office Viewers - Microsoft Office 2004 for Mac - Microsoft Office v. X for Mac A remote code execution vulnerability exists in Office and could be exploited when Office opened a malformed PNG or GIF file. An attacker could exploit the vulnerability by constructing a specially crafted PNG or GIF file that could allow remote code execution. If a user were 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. Users whose accounts are configured to have fewer user rights on the system could be less affected than users who operate with administrative user rights. Mitigating Factors - ------------------ - 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 can not 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. - On Office XP and Office 2003, this vulnerability could not be exploited automatically through a Web-based attack scenario. An attacker would have to host a Web site that contains an Office file that is used to attempt to exploit this vulnerability. An attacker would have no way to force users to visit a malicious Web site. Instead, an attacker would have to persuade them to visit the Web site, typically by getting them to click a link that takes them to the attacker's site. - The default PNG and GIF filters provided by the operating system without Office installed is not affected by this vulnerability. Note: Office 2000 does not prompt the user to Open, Save, or Cancel before opening a document. Workarounds - ----------- Microsoft has tested the following workarounds. While these workarounds will not correct the underlying vulnerability, they help block known attack vectors. When a workaround reduces functionality, it is identified in the following section. Do not open or save Microsoft PNG or GIF files that you receive from un-trusted sources or that you received unexpectedly from trusted sources. This vulnerability could be exploited when a user opens a PNG or GIF file. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: email@example.com Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRLRAUCh9+71yA2DNAQLGqQP/W+EfWra4U7OM6yVPhq8875B7MKOgAsKW VAS26dyF6bZZ8kW5CS3lRQ++BiBtkwbYkeUOMjDXM5UlHVi9WPMdLZtZ/UMTDHPV 1RpdbRH36PDTbEH7RllSryUpctyVYMMal5ePqJKCHyqDzNwsPEI4vpTuAklONbvL 4Nf2PAp2YmE= =rQJH -----END PGP SIGNATURE-----