CVE-2001-0761 in Interscan Webmanager
Summary
by MITRE
Buffer overflow in HttpSave.dll in Trend Micro InterScan WebManager 1.2 allows remote attackers to execute arbitrary code via a long value to a certain parameter.
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Analysis
by VulDB Data Team • 10/04/2025
The vulnerability identified as CVE-2001-0761 represents a critical buffer overflow flaw within the HttpSave.dll component of Trend Micro InterScan WebManager version 1.2. This security weakness resides in the web-based management interface that organizations use to monitor and control their network security policies. The flaw manifests when the system processes HTTP requests containing excessively long parameter values, specifically targeting a particular parameter within the web management framework. The buffer overflow occurs because the application fails to properly validate input length before copying data into fixed-size memory buffers, creating an exploitable condition that can be leveraged by remote attackers without requiring authentication or specialized privileges.
This vulnerability directly maps to CWE-121, which describes heap-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The technical implementation of this flaw involves the application's failure to implement proper input validation mechanisms before processing user-supplied data through the web interface. When a malicious actor submits a request containing an overly long parameter value, the HttpSave.dll module attempts to store this data in a predetermined memory buffer that cannot accommodate the excessive input length. This overflow can overwrite critical memory segments including return addresses, function pointers, or other control data structures that govern program execution flow.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with a pathway to gain unauthorized control over the affected system. Remote code execution capabilities mean that threat actors can potentially install backdoors, modify security policies, or access sensitive configuration data without detection. The vulnerability affects organizations using Trend Micro InterScan WebManager 1.2, which was designed to provide centralized web security management for enterprise environments. This creates a significant risk for organizations that rely on this specific version of the software for their web security infrastructure, as successful exploitation could compromise entire network security monitoring capabilities.
Mitigation strategies for this vulnerability require immediate patching of the affected Trend Micro InterScan WebManager version 1.2 to address the buffer overflow condition in HttpSave.dll. Organizations should implement network segmentation to limit access to the web management interface and restrict access to authorized administrative users only. Additionally, deploying intrusion detection systems that can identify suspicious HTTP request patterns and parameter lengths may help detect exploitation attempts. The vulnerability demonstrates the importance of input validation and proper memory management practices in web applications, aligning with ATT&CK technique T1059.007 for command and scripting interpreter execution. Organizations should also consider implementing web application firewalls to filter out malformed requests that could exploit similar buffer overflow conditions in other web-based applications. The remediation process should include thorough testing of patched versions to ensure that the fix does not introduce regressions in functionality while maintaining the integrity of the web security management system.