CVE-2002-0290 in Webnews
Summary
by MITRE
Buffer overflow in Netwin WebNews CGI program 1.1, Webnews.exe, allows remote attackers to execute arbitrary code via a long group argument.
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Analysis
by VulDB Data Team • 09/20/2025
The vulnerability identified as CVE-2002-0290 represents a critical buffer overflow flaw within the Netwin WebNews CGI program version 1.1, specifically in the Webnews.exe component. This vulnerability resides in the handling of user-supplied input parameters, particularly the group argument that is processed by the web news application. The flaw stems from insufficient bounds checking during the processing of the group parameter, allowing an attacker to supply an excessively long argument that exceeds the allocated buffer space. Such buffer overflow conditions occur when programs write data beyond the boundaries of pre-allocated memory blocks, potentially overwriting adjacent memory locations including return addresses and critical program variables. The vulnerability falls under the Common Weakness Enumeration category CWE-121, which specifically addresses stack-based buffer overflow conditions where insufficient bounds checking permits attackers to overwrite stack data structures. This weakness directly enables arbitrary code execution capabilities as demonstrated in the exploitation of this particular vulnerability.
The operational impact of CVE-2002-0290 extends beyond simple denial of service scenarios, as it provides remote attackers with the capability to execute arbitrary code on vulnerable systems. When an attacker crafts a malicious HTTP request containing an overly long group argument, the buffer overflow can be leveraged to overwrite the program's execution flow, potentially allowing the attacker to inject and execute malicious code with the privileges of the web server process. The exploitation mechanism typically involves crafting a payload that overflows the buffer and redirects program execution to the injected code, often through stack smashing techniques that overwrite return addresses. This vulnerability is particularly dangerous in web environments where CGI applications are frequently deployed, as it can be exploited through standard web browser interactions without requiring any special privileges or local access. The attack vector is classified as remote and requires no authentication, making it highly attractive to malicious actors seeking to compromise web servers running vulnerable versions of the Netwin WebNews application.
Mitigation strategies for CVE-2002-0290 should encompass both immediate defensive measures and long-term architectural improvements. Organizations should prioritize patching or upgrading to versions of the Netwin WebNews application that address the buffer overflow vulnerability, as this represents the most effective remediation approach. System administrators should implement input validation measures that enforce strict length limitations on all user-supplied parameters, particularly those used in CGI applications. Network segmentation and access control measures can help limit the potential impact of successful exploitation by restricting access to vulnerable web applications. Additionally, deploying intrusion detection systems capable of identifying suspicious HTTP request patterns that attempt to exploit buffer overflow vulnerabilities can provide early warning capabilities. The vulnerability also highlights the importance of following secure coding practices such as those recommended in the OWASP Secure Coding Practices, which emphasize proper buffer management and input validation. From an ATT&CK framework perspective, this vulnerability maps to techniques involving command and control communications and privilege escalation, as attackers can use the arbitrary code execution capability to establish persistent access and potentially move laterally within compromised networks. Regular security assessments and vulnerability scanning should be implemented to identify and remediate similar buffer overflow conditions in other legacy web applications, as these types of vulnerabilities remain prevalent in older software systems.