CVE-2005-0478 in TrackerCam
Summary
by MITRE
Multiple buffer overflows in TrackerCam 5.12 and earlier allow remote attackers to cause a denial of service and possibly execute arbitrary code via (1) an HTTP request with a long User-Agent header or (2) a long argument to an arbitrary PHP script.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 06/05/2019
The vulnerability identified as CVE-2005-0478 represents a critical security flaw affecting TrackerCam 5.12 and earlier versions, demonstrating the persistent threat of buffer overflow vulnerabilities in web applications and network services. This vulnerability resides within the application's handling of user input through HTTP headers and PHP script arguments, creating a pathway for remote attackers to exploit the system's memory management weaknesses. The flaw specifically targets the application's inability to properly validate and sanitize input lengths, allowing malicious actors to craft specially crafted requests that exceed the allocated buffer space. Such buffer overflows occur when programs write more data to a fixed-length buffer than it can accommodate, leading to memory corruption that can result in unpredictable behavior including application crashes or potential code execution. The vulnerability's impact extends beyond simple denial of service as it may enable remote code execution, making it particularly dangerous for systems where TrackerCam is deployed. This type of vulnerability is classified under CWE-121 as stack-based buffer overflow, which occurs when data is written beyond the bounds of a stack-allocated buffer, and also aligns with CWE-122 for heap-based buffer overflow when heap memory is improperly managed. The attack vectors identified in this vulnerability map directly to the ATT&CK technique T1203 known as "Exploitation for Client Execution" where adversaries leverage application vulnerabilities to execute code on target systems.
The technical implementation of this vulnerability involves two distinct attack paths that exploit different aspects of the application's input handling mechanisms. The first vector targets the HTTP User-Agent header, a standard HTTP header field that browsers and other HTTP clients send to identify themselves to web servers. When TrackerCam processes an HTTP request containing an excessively long User-Agent header, the application fails to implement proper bounds checking, allowing the buffer to overflow and potentially overwrite adjacent memory locations. The second attack vector involves manipulating arguments passed to PHP scripts within the TrackerCam environment, where the application does not adequately validate the length of input parameters before processing them. Both attack scenarios leverage the fundamental weakness in input validation where the application assumes that all input will conform to expected size limits, creating an environment where malicious input can corrupt memory structures and potentially lead to arbitrary code execution. The buffer overflow conditions in both cases create opportunities for attackers to manipulate the program's execution flow through stack corruption or heap memory manipulation, potentially allowing them to inject and execute malicious code within the application's context. The severity of this vulnerability is amplified by the fact that it can be exploited remotely without requiring any special privileges or authentication, making it particularly attractive to attackers seeking to compromise systems running vulnerable versions of TrackerCam.
The operational impact of CVE-2005-0478 extends beyond immediate service disruption to encompass potential system compromise and data exposure risks. Organizations running vulnerable versions of TrackerCam face significant operational risks including complete service outages when attackers successfully exploit the denial of service conditions, as well as the possibility of unauthorized code execution that could lead to complete system compromise. The vulnerability's remote exploitability means that attackers can target systems from anywhere on the internet without requiring physical access or local network presence, making it particularly dangerous for networked applications. When buffer overflows result in code execution, attackers can potentially gain administrative privileges within the application's execution context, allowing them to access sensitive data, modify system configurations, or establish persistent access through backdoor mechanisms. The impact on business operations can be substantial as service interruptions may affect monitoring and security operations that depend on TrackerCam functionality. Additionally, the vulnerability may expose underlying system components to further exploitation as attackers who gain initial access through buffer overflow exploitation can potentially escalate privileges or move laterally within network environments. The lack of authentication requirements for exploitation means that any system running vulnerable TrackerCam software is immediately at risk from automated scanning and exploitation tools that continuously search for known vulnerabilities in internet-facing applications.
Mitigation strategies for CVE-2005-0478 should focus on immediate remediation through software updates and comprehensive input validation implementation. The primary and most effective mitigation involves upgrading to TrackerCam versions that address the buffer overflow vulnerabilities, as this eliminates the root cause of the security issue. Organizations should implement strict input validation measures that enforce maximum length limits on all HTTP headers and script arguments, particularly focusing on the User-Agent header and PHP parameter handling. The implementation of proper bounds checking and memory management practices within the application code can prevent buffer overflow conditions from occurring, including the use of safe string handling functions that automatically perform bounds checking. Network-level mitigations should include firewall rules that limit access to TrackerCam services and implement rate limiting to prevent exploitation attempts through flooding attacks. Additionally, organizations should deploy intrusion detection systems capable of identifying and blocking malicious HTTP requests containing long headers or suspicious parameter lengths. The implementation of web application firewalls can provide an additional layer of protection by filtering out malformed requests before they reach the vulnerable application components. Security monitoring should include regular vulnerability scanning to identify any remaining instances of vulnerable software and ensure that all systems are properly patched. System administrators should also implement proper logging and monitoring of HTTP traffic to detect potential exploitation attempts and establish incident response procedures for rapid response to successful attacks. The remediation process should also include comprehensive security testing of updated applications to verify that the buffer overflow vulnerabilities have been properly addressed and that no new vulnerabilities have been introduced through the patching process.