Microsoft Office XP MS08-056 (CVE-2008-4020) Information Disclosure Vulnerability Advisory

Critical Vulnerability Information Vulnerability ID: MS08-056 (CVE-2008-4020) Affected Software: Microsoft Office XP Service Pack 3 Vulnerability Type: Information Disclosure Impact: If a user clicks on a specially crafted CDO URL, it may lead to information disclosure. Affected Scope Affected Software: - Microsoft Office XP Service Pack 3 (KB956464) Unaffected Software: - Microsoft Office 2000 Service Pack 3 - Microsoft Office 2003 Service Pack 2 - Microsoft Office 2003 System Update Pack 1 - etc. Vulnerability Details CVE ID: CVE-2008-4020 Vulnerability Description: When processing documents with a content-disposition: attachment header via CDO, the document may be incorrectly rendered, leading to a cross-site scripting (XSS) attack. This allows attackers to inject client-side scripts, impersonate content, or disclose information. Mitigation Measures Disable CDO Protocol Handler: Disable the protocol handler by unregistering specific registry keys to protect affected systems. Enhanced Security Configuration: Use Internet Explorer’s Enhanced Security Configuration. Frequently Asked Questions Vulnerability Scope: Information disclosure, potentially leading to content impersonation or data leakage. Exploitation: No public or actual exploitation of this vulnerability has been reported. Update Information Detection and Deployment Tools: MSMBSA 2.0.1, Microsoft Update, Windows Update, Office Update, etc. Deployment Guide: Provides detailed deployment steps and parameters, including reboot requirements, hotfixes, file version verification, etc. Detection Tool: Microsoft Baseline Security Analyzer (MBSA)

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Microsoft Office XP MS08-056 (CVE-2008-4020) Information Disclosure Vulnerability Advisory