CVE-2009-1606 in DafoloControl
Summary
by MITRE
Multiple stack-based and heap-based buffer overflows in Dafolo DafoloControl ActiveX control (DafoloFFControl.dll) 1.108.6.195 allow remote attackers to execute arbitrary code via long (1) baseurl, (2) kommune, (3) felter, (4) afdeling, (5) Flags, (6) HelpURL, (7) caburl, or (8) filename properties; or (9) a long argument to the Open method. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 08/11/2021
The vulnerability identified as CVE-2009-1606 affects the Dafolo DafoloControl ActiveX control version 1.108.6.195, specifically targeting the DafoloFFControl.dll component. This represents a critical security flaw that exposes systems to remote code execution attacks through improper input validation mechanisms. The vulnerability manifests as both stack-based and heap-based buffer overflows, which are particularly dangerous because they can be exploited to gain complete control over affected systems. The attack surface encompasses multiple properties within the ActiveX control including baseurl, kommune, felter, afdeling, Flags, HelpURL, caburl, and filename, along with a specific method parameter named Open. These properties and methods accept user-supplied input without adequate bounds checking, creating opportunities for malicious actors to craft specially crafted payloads that exceed the allocated buffer space.
The technical implementation of this vulnerability stems from insufficient input validation and memory management practices within the ActiveX control's codebase. When the control processes the specified properties or arguments, it fails to properly validate the length of incoming data, allowing attackers to overflow the allocated memory buffers. This type of vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios. The exploitation mechanism leverages the inherent characteristics of buffer overflows where attacker-controlled data can overwrite adjacent memory locations, potentially corrupting program execution flow or injecting malicious code. The fact that multiple properties can be exploited indicates a systemic weakness in the control's input handling architecture rather than isolated code defects.
The operational impact of this vulnerability is severe and far-reaching, particularly in environments where ActiveX controls are enabled and users have the ability to browse to malicious websites or receive compromised content. Attackers can leverage this vulnerability to execute arbitrary code with the privileges of the user running the affected application, which typically corresponds to the user's current security context. This could result in complete system compromise, data theft, or the deployment of additional malware. The vulnerability's remote exploitability means that attackers do not require physical access to target systems, making it particularly dangerous in enterprise environments where users may browse untrusted websites or receive malicious email attachments containing compromised web content. The attack vector through web browsers makes this vulnerability particularly prevalent in scenarios where ActiveX controls are automatically enabled without user consent or awareness.
Mitigation strategies for CVE-2009-1606 should prioritize immediate remediation through vendor-provided patches or updates to the Dafolo DafoloControl ActiveX control. Organizations should implement comprehensive network segmentation and access controls to limit exposure of systems running ActiveX controls. Browser security configurations should be adjusted to disable ActiveX controls or restrict their execution to trusted sites only. The implementation of application whitelisting policies can prevent unauthorized ActiveX controls from executing on target systems. Additionally, security monitoring should be enhanced to detect suspicious network traffic patterns or system behaviors that may indicate exploitation attempts. This vulnerability aligns with ATT&CK technique T1176, which focuses on Browser Extensions, and T1059, covering Command and Scripting Interpreter, as attackers may leverage the executed code to establish persistence or conduct further reconnaissance activities. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other ActiveX controls or legacy components within the organization's attack surface.