CVE-2007-3660 in Asp Barcode
Summary
by MITRE
The Nonnoi ASP/Barcode ActiveX control (nonnoi_ASPBarcode.dll) allows remote attackers to overwrite arbitrary files via an argument to the SaveBarcode function.
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Analysis
by VulDB Data Team • 10/27/2017
The CVE-2007-3660 vulnerability resides within the Nonnoi ASP/Barcode ActiveX control, specifically in the nonnoi_ASPBarcode.dll component that is commonly deployed in web applications requiring barcode generation functionality. This ActiveX control exposes a SaveBarcode function that accepts user-supplied arguments without proper validation or sanitization, creating a critical path for malicious exploitation. The vulnerability represents a classic example of insecure direct object reference and improper input validation, where the control fails to properly validate file paths or destination locations provided by external inputs.
The technical flaw manifests when an attacker can manipulate the argument passed to the SaveBarcode function to specify arbitrary file paths on the target system. This allows for arbitrary file overwrite operations, where malicious actors can write data to any location accessible by the web server process. The vulnerability stems from the ActiveX control's lack of proper access control mechanisms and input validation, enabling attackers to bypass normal file system permissions and potentially overwrite critical system files, configuration files, or even web application components. This type of vulnerability falls under CWE-22 - Improper Limitation of a Pathname to a Restricted Directory and CWE-73 - External Control of File Name or Path, both of which are commonly exploited in file system related attacks.
The operational impact of this vulnerability is severe and multifaceted, as it can be exploited remotely without requiring authentication or prior access to the system. Attackers can leverage this weakness to perform persistent attacks by overwriting legitimate files with malicious content, potentially leading to complete system compromise. The vulnerability can be exploited through various attack vectors including web browsers, web applications, or even through phishing attacks that trick users into visiting malicious pages containing the exploit. This weakness directly maps to several ATT&CK techniques including T1059 - Command and Scripting Interpreter and T1074 - Data Staged, as attackers can use the arbitrary file overwrite capability to establish persistence and stage additional malicious payloads.
Mitigation strategies for CVE-2007-3660 should focus on immediate remediation through the removal or disabling of the vulnerable ActiveX control from affected systems. Organizations should implement proper input validation and sanitization mechanisms to prevent arbitrary file path manipulation, ensuring that all user-supplied inputs are properly validated against a whitelist of acceptable values. Network segmentation and application whitelisting can help prevent exploitation by limiting the attack surface and restricting which systems can access the vulnerable components. The implementation of least privilege principles for web server processes and regular security assessments of ActiveX controls and other browser plugins should be enforced. Additionally, organizations should consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts targeting known vulnerable ActiveX controls. The vulnerability underscores the importance of regularly updating and patching legacy components, as the Nonnoi ASP/Barcode ActiveX control represents an outdated technology that should be replaced with modern, secure alternatives that follow current security best practices and do not expose unnecessary functionality to external users.