Vulnerability in the Embedded OpenType Font Engine Could Allow Remote Code Execution
Description: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow remote code execution if a user viewed content rendered in a specially crafted Embedded OpenType (EOT) font in client applications that can render EOT fonts, such as Microsoft Internet Explorer, Microsoft Office PowerPoint, or Microsoft Office Word. 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 impacted than users who operate with administrative user rights. The security update addresses the vulnerability by correcting the way that the Embedded OpenType Font Engine decompresses specially crafted files and content containing embedded fonts.
Update type: Critical
Release date: January 12, 2010
Applies to: All versions
Knowledge base: http://support.microsoft.com/kb/972270
- Microtype Express Compressed Fonts Integer Flaw in the LZCOMP Decompressor Vulnerability – CVE-2010-0018
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB972270.