CVE-2007-5861 in Mac OS X
Summary
by MITRE
Unspecified vulnerability in Spotlight in Apple Mac OS X 10.4.11 allows user-assisted attackers to cause a denial of service (application termination) or execute arbitrary code via a crafted .XLS file that triggers memory corruption in the Microsoft Office Spotlight Importer.
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Analysis
by VulDB Data Team • 06/07/2025
The vulnerability identified as CVE-2007-5861 represents a critical security flaw within Apple Mac OS X 10.4.11's Spotlight search functionality, specifically affecting the Microsoft Office Spotlight Importer component. This issue demonstrates how third-party application integrations can introduce significant security risks into operating system frameworks. The vulnerability operates through a user-assisted attack vector, meaning that an attacker must convince a user to interact with a maliciously crafted file for the exploit to succeed. The affected component resides within the Spotlight indexing system, which is designed to provide fast and efficient file search capabilities across the system while maintaining metadata about file contents and properties.
The technical root cause of this vulnerability lies in improper memory handling within the Microsoft Office Spotlight Importer module. When Spotlight processes a crafted .XLS file, the importer fails to properly validate or sanitize the file structure, leading to memory corruption conditions that can result in either application termination or arbitrary code execution. This memory corruption occurs during the file parsing phase where the importer attempts to extract metadata and content information from the Excel spreadsheet for indexing purposes. The flaw specifically affects how the importer handles malformed or maliciously constructed Excel file headers and data structures, causing buffer overflows or other memory management errors that can be exploited by attackers.
From an operational impact perspective, this vulnerability presents a significant risk to Mac OS X users running version 10.4.11, as it allows attackers to either disrupt system operations through denial of service or gain unauthorized code execution privileges. The user-assisted nature of the attack means that social engineering tactics could be employed to convince users to open malicious files, making the attack surface broader than purely automated exploits. The implications extend beyond simple system disruption since arbitrary code execution capabilities could enable attackers to install malware, modify system files, or establish persistence mechanisms within the target environment. This vulnerability particularly affects enterprise environments where users may regularly interact with Microsoft Office documents and where Spotlight indexing is actively used for document management and search operations.
Security professionals should note that this vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write conditions. The attack pattern follows techniques described in the ATT&CK framework under T1059 for command and scripting interpreter and T1489 for denial of service. Mitigation strategies should include immediate patching of the operating system to the latest available security updates from Apple, disabling Spotlight indexing for potentially malicious file types, and implementing network-based security controls such as content filtering and email scanning to prevent malicious .XLS files from reaching end users. Additionally, organizations should consider implementing user education programs to raise awareness about suspicious file attachments and the risks associated with opening documents from untrusted sources. The vulnerability underscores the importance of secure coding practices in system components that process external data and highlights the need for comprehensive testing of third-party integrations within operating system frameworks.