CVE-2008-4493 in Digital Image
Summary
by MITRE
Microsoft PicturePusher ActiveX control (PipPPush.DLL 7.00.0709), as used in Microsoft Digital Image 2006 Starter Edition, allows remote attackers to force the upload of arbitrary files by using the AddString and Post methods and a modified PostURL to construct an HTTP POST request. NOTE: this issue might only be exploitable in limited environments or non-default browser settings.
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Analysis
by VulDB Data Team • 05/25/2025
The vulnerability identified as CVE-2008-4493 resides within the Microsoft PicturePusher ActiveX control version 7.00.0709, specifically found in Microsoft Digital Image 2006 Starter Edition. This ActiveX control presents a significant security flaw that enables remote attackers to manipulate file upload operations through carefully constructed HTTP requests. The vulnerability stems from improper input validation and insufficient sanitization of user-supplied data within the control's implementation, creating an avenue for arbitrary file upload attacks.
The technical exploitation occurs through the manipulation of the AddString and Post methods combined with a modified PostURL parameter. Attackers can construct malicious HTTP POST requests that bypass normal file upload restrictions, allowing them to upload files to the target system without proper authorization. This flaw operates at the application layer and leverages the trust relationship between the ActiveX control and the web browser environment. The vulnerability is classified under CWE-434, which specifically addresses "Unrestricted Upload of File with Dangerous Type," and represents a classic case of insecure file handling within ActiveX components. The attack vector requires a victim to browse to a malicious webpage that contains the exploit code, making it a client-side attack that relies on social engineering or compromised websites.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads, as it can potentially enable attackers to execute arbitrary code on the target system. When combined with other exploitation techniques, the ability to upload malicious files such as web shells or trojan executables creates a persistent threat vector. The vulnerability's effectiveness is constrained by the browser environment and security settings, making it potentially exploitable only in specific configurations or when users have default security settings that do not adequately protect against ActiveX controls. This limitation aligns with ATT&CK technique T1195.001, which covers "Supply Chain Compromise: Compromise Software Dependencies and Development Tools," though in this case the compromise occurs through the exploitation of a legitimate but vulnerable ActiveX control. The vulnerability demonstrates the inherent risks of ActiveX controls in web environments, where legacy components can introduce security gaps that persist long after their initial deployment.
Mitigation strategies for CVE-2008-4493 should focus on immediate removal of the vulnerable PicturePusher ActiveX control from affected systems. Organizations must ensure that Microsoft Digital Image 2006 Starter Edition is uninstalled and that all related ActiveX controls are disabled in browser configurations. Browser security settings should be hardened to prevent automatic execution of ActiveX controls, particularly those from untrusted sources. The implementation of content security policies and strict file type validation can help prevent exploitation attempts. Additionally, system administrators should consider implementing network-based controls to monitor for suspicious file upload activities and ensure that legacy software components are properly deprecated. Regular security assessments should verify that no vulnerable ActiveX controls remain in use, as these components often continue to pose risks even after their original vulnerabilities are patched. The vulnerability underscores the importance of maintaining up-to-date security practices and the dangers of relying on outdated software components in modern computing environments.