CVE-2007-2566 in Tal Bar Code ActiveX control
Summary
by MITRE
The SaveBarCode function in the Taltech Tal Bar Code ActiveX control allows remote attackers to cause a denial of service (disk consumption) by uploading multiple bar codes, as demonstrated by a WSF package.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/17/2017
The CVE-2007-2566 vulnerability resides within the Taltech Tal Bar Code ActiveX control, specifically in the SaveBarCode function that handles barcode data processing. This flaw represents a classic resource exhaustion attack vector that exploits the control's inadequate input validation and processing logic. The vulnerability manifests when the ActiveX control receives multiple barcode data inputs through a WSF package, which is a Windows Script File format commonly used for executing scripts in Windows environments. The control fails to properly manage memory allocation and disk space usage during the barcode saving process, leading to uncontrolled resource consumption that can ultimately result in system denial of service conditions.
The technical implementation of this vulnerability stems from the ActiveX control's lack of proper bounds checking and resource management within the SaveBarCode function. When multiple barcodes are processed through the WSF package, the control does not implement adequate safeguards to prevent excessive disk space consumption or memory allocation. This behavior aligns with CWE-770, which addresses allocation of resources without limits or appropriate checks, and represents a direct violation of secure coding practices for component-based applications. The vulnerability operates at the application layer and can be exploited remotely through web-based interfaces that utilize the affected ActiveX control, making it particularly dangerous in web environments where users may unknowingly execute malicious code through browser-based attacks.
The operational impact of CVE-2007-2566 extends beyond simple denial of service conditions to potentially compromise entire system availability. Attackers can leverage this vulnerability to consume disk space rapidly, potentially causing systems to become unresponsive or crash entirely when storage capacity is exhausted. The attack vector through WSF packages demonstrates the danger of script-based exploitation in ActiveX environments, where malicious actors can craft packages that trigger the vulnerable function with multiple barcode inputs. This vulnerability particularly affects systems running Windows operating systems with Internet Explorer browsers that support ActiveX controls, and it represents a significant risk to enterprise environments where such controls may be deployed without proper security assessments.
Mitigation strategies for CVE-2007-2566 require a multi-layered approach that addresses both immediate security concerns and long-term system hardening. Organizations should immediately disable or remove the vulnerable Taltech Tal Bar Code ActiveX control from affected systems, particularly those accessible through web browsers or exposed to untrusted users. Network segmentation and application whitelisting can help prevent unauthorized execution of the ActiveX control, while implementing proper input validation and resource monitoring can provide early detection of potential exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1203, which covers exploitation of remote services, and organizations should consider implementing security controls that address both the specific ActiveX vulnerability and broader attack surface management principles. Regular security assessments and patch management processes should include verification of ActiveX control installations to prevent similar vulnerabilities from remaining unaddressed in production environments.