CVE-2007-0025 in Windows
Summary
by MITRE
The MFC component in Microsoft Windows 2000 SP4, XP SP2, and 2003 SP1 and Visual Studio .NET 2000, 2002 SP1, 2003, and 2003 SP1 allows user-assisted remote attackers to execute arbitrary code via an RTF file with a malformed OLE object that triggers memory corruption. NOTE: this might be due to a stack-based buffer overflow in the AfxOleSetEditMenu function in MFC42u.dll.
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Analysis
by VulDB Data Team • 01/05/2025
The vulnerability identified as CVE-2007-0025 represents a critical stack-based buffer overflow within the Microsoft Foundation Classes (MFC) component that affects multiple Microsoft Windows operating systems and Visual Studio versions. This flaw resides in the MFC42u.dll library and specifically targets the AfxOleSetEditMenu function, creating a pathway for remote code execution when processing malformed RTF files containing specially crafted OLE objects. The vulnerability impacts Windows 2000 Service Pack 4, Windows XP Service Pack 2, Windows 2003 Service Pack 1, and various Visual Studio .NET versions including 2000, 2002 SP1, 2003, and 2003 SP1, establishing a wide attack surface across legacy Microsoft platforms. The flaw operates through user-assisted remote exploitation, meaning that an attacker must convince a user to open a malicious RTF document, though the actual execution occurs without user interaction once the file is processed by the vulnerable system components.
The technical mechanism behind this vulnerability involves the improper handling of OLE (Object Linking and Embedding) objects within RTF (Rich Text Format) documents, where the AfxOleSetEditMenu function fails to properly validate the size of incoming data before copying it into fixed-size memory buffers. This classic stack-based buffer overflow occurs when an attacker crafts an RTF file with oversized OLE object data that exceeds the allocated buffer space, causing memory corruption that can be leveraged to overwrite return addresses and execute arbitrary code with the privileges of the compromised process. The vulnerability specifically manifests when the MFC component processes embedded objects within RTF files, particularly those containing malformed OLE structures that trigger the buffer overflow condition in the MFC42u.dll library. This issue aligns with CWE-121 Stack-based Buffer Overflow, which describes buffer overflow conditions where data is written beyond the bounds of a stack buffer, and represents a fundamental memory safety issue that has been a persistent concern in Windows application development.
The operational impact of CVE-2007-0025 extends beyond simple code execution, as successful exploitation can lead to complete system compromise and persistent access within the victim environment. Attackers can leverage this vulnerability to gain unauthorized access to systems, escalate privileges, and potentially establish backdoors or deploy additional malware payloads. The user-assisted nature of the attack means that social engineering becomes a critical factor in exploitation success, though the actual technical execution is straightforward once a user opens the malicious document. This vulnerability poses significant risk to enterprise environments where users frequently open documents from untrusted sources, particularly in email systems where RTF attachments are common. The vulnerability's presence in widely deployed software components like Visual Studio .NET and Windows operating systems creates a substantial risk profile, as it can be exploited across multiple system configurations and deployment scenarios, making it particularly attractive to threat actors seeking broad impact.
Mitigation strategies for CVE-2007-0025 should prioritize immediate patching of affected systems through Microsoft security updates, as the vulnerability has been addressed through official security releases that correct the buffer overflow in the MFC component. Organizations should implement strict email filtering policies to prevent RTF attachments from untrusted sources, while also disabling automatic opening of RTF files and implementing application whitelisting to restrict execution of potentially vulnerable applications. Network segmentation and endpoint protection measures can help limit the potential spread of exploitation attempts, while regular security assessments should identify any systems that may not have received the necessary patches. Additionally, administrators should consider disabling OLE object embedding in documents where possible, as this reduces the attack surface for this particular vulnerability. The remediation approach should also include monitoring for exploitation attempts through security information and event management systems, as the vulnerability's exploitation patterns can be detected through anomalous network traffic or system behavior. Organizations should also consider implementing the principle of least privilege to minimize the potential damage from successful exploitation, ensuring that even if an attacker gains access, they cannot easily escalate privileges or move laterally within the network environment.