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Critical Vulnerabilities in GDI Could Allow Remote Code Execution (KB948590)

Microsoft Security Bulletin MS08-021 – Critical
Published: April 8, 2008 | Updated: April 11, 2008

Bulletin revisions

V1.0 (April 8, 2008): Bulletin published.
V1.1 (April 9, 2008): Bulletin updated to add a Known Issues link to Microsoft Knowledge Base Article 948590, to add a Known Issues section to the FAQ, to update the uninstall registry path, and to update the Acknowledgments.
V1.2 (April 11, 2008): Bulletin updated to remove a reference to unsupported software in the Vulnerability FAQs.

Executive Summary

This security update resolves two privately reported vulnerabilities in GDI. Exploitation of either of these vulnerabilities could allow remote code execution if a user opens a specially crafted EMF or WMF image file. 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.

This is a critical security update for Microsoft Windows 2000 Service Pack 4, and all supported releases of Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008.
This security update addresses the vulnerability by modifying the way that GDI handles integer calculations and string parameters. For more information about the vulnerability, see the Frequently Asked Questions (FAQ) subsection for the specific vulnerability entry under the next section, Vulnerability Information.


Microsoft recommends that customers apply the update immediately

Affected software

– Microsoft Windows 2000 Service Pack 4
– Windows XP Service Pack 2
– Windows XP Professional x64 Edition and Windows XP Professional x64 Edition SP2
– Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2
– Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2
– Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium based Systems
– Windows Vista and Windows Vista Service Pack 1
– Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1
– Windows Server 2008 for 32-bit Systems
– Windows Server 2008 for x64-based Systems
– Windows Server 2008 for Itanium-based Systems

Source: Microsoft


April 12, 2008 - Posted by | Advisories, Alerts, Downloads, Friends, Malware, Recommended External Security Related Links | , , , , , ,

1 Comment »

  1. MS08-021 Exploit Activity Increasing

    Last Friday the first MS08-021 exploit was discovered in the field, three days after the issue was patched; and though it was not widespread, the discovery of the exploit did highlight the fact that attackers were actively working with exploit code. Today a basic exploit toolkit was posted publicly; and while this new toolkit is primitive, it may very well lead to “one-ups-manship” and the distribution of a more powerful tool.

    Given the fact that a patch was released prior to this recent exploit activity it is unlikely that MS08-021 attacks will reach the level of MS06-001 attacks. However, there are still many many vulnerable systems out there, and we’ve seen prevalent exploits that have lasted for years after the issue was patched.

    Source: McAfee Alert Labs

    Comment by Smokey | April 15, 2008 | Reply

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