CVE-2005-2966 in dia
Summary
by MITRE
The Python SVG import plugin (diasvg_import.py) for DIA 0.94 and earlier allows user-assisted attackers to execute arbitrary commands via a crafted SVG file.
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Analysis
by VulDB Data Team • 06/10/2019
The vulnerability identified as CVE-2005-2966 represents a critical command execution flaw within the DIA diagramming application's Python SVG import plugin. This issue affects DIA versions 0.94 and earlier, where the diasvg_import.py module fails to properly sanitize user-supplied SVG content during the import process. The vulnerability stems from improper input validation and unsafe execution practices that allow maliciously crafted SVG files to trigger arbitrary command execution on the victim's system. The flaw operates under the principle of insufficient input sanitization, which is classified as CWE-74 in the Common Weakness Enumeration catalog, specifically addressing improper neutralization of special elements used in a command.
The technical exploitation of this vulnerability occurs when a user imports a specially crafted SVG file into DIA, which contains embedded Python code or commands that are executed within the context of the application's Python interpreter. The SVG import plugin processes the file without adequate security checks, allowing attackers to inject malicious payloads that can execute with the privileges of the user running DIA. This represents a classic example of a code injection vulnerability that leverages the trust relationship between the application and its import functionality, enabling attackers to bypass normal security controls. The attack vector requires user interaction since the vulnerability is triggered during the SVG file import process, making it a user-assisted remote code execution vulnerability.
The operational impact of CVE-2005-2966 extends beyond simple command execution to potentially compromise entire systems. An attacker who successfully exploits this vulnerability can execute arbitrary commands on the target system, potentially leading to complete system compromise, data exfiltration, or installation of persistent backdoors. The vulnerability affects any system running DIA 0.94 or earlier versions, making it particularly dangerous in environments where users may encounter malicious SVG files through email attachments, web downloads, or shared network resources. This type of vulnerability aligns with ATT&CK technique T1059.006, which covers execution through Python, and demonstrates how legitimate application features can be abused to achieve malicious objectives.
Mitigation strategies for this vulnerability focus on immediate remediation through software updates and implementation of defensive measures. The primary solution involves upgrading to DIA version 0.95 or later, where the vulnerability has been patched through improved input validation and secure coding practices. Organizations should also implement strict file validation policies, particularly for SVG files from untrusted sources, and consider sandboxing or virtualization techniques to isolate the import process. Network administrators should monitor for suspicious file imports and implement application whitelisting to prevent execution of unauthorized code. Additionally, user education regarding the risks of opening untrusted files remains crucial, as the vulnerability requires user interaction to be exploited. The fix for this vulnerability demonstrates the importance of proper input validation and secure coding practices in preventing command injection attacks, aligning with security best practices outlined in the OWASP Top Ten and NIST Cybersecurity Framework.