CVE-2009-2460 in mathtex
Summary
by MITRE
Multiple stack-based buffer overflows in mathtex.cgi in mathTeX, when downloaded before 20090713, have unspecified impact and remote attack vectors.
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Analysis
by VulDB Data Team • 08/12/2021
The vulnerability identified as CVE-2009-2460 affects the mathtex.cgi component within the mathTeX software suite, representing a critical security flaw that emerged in versions prior to the 20090713 release. This issue manifests as multiple stack-based buffer overflows, which occur when the CGI script processes user-supplied input without adequate bounds checking or validation. The affected software is designed to convert mathematical expressions into images for web display, making it a common component in academic and scientific publishing platforms where mathematical notation needs to be rendered dynamically. The vulnerability stems from improper handling of input parameters that are passed directly to stack-based functions without sufficient size validation, creating opportunities for attackers to manipulate memory layout and potentially execute arbitrary code.
The technical nature of this vulnerability places it squarely within the scope of CWE-121, stack-based buffer overflow, which is classified as a fundamental memory safety issue in software development practices. When an attacker crafts malicious input to the mathtex.cgi script, they can overflow the allocated stack buffer and overwrite adjacent memory locations, potentially corrupting program execution flow. This type of vulnerability is particularly dangerous because it can be exploited remotely through web-based interfaces, allowing attackers to inject malicious code that may escalate privileges or completely compromise the affected system. The unspecified impact mentioned in the original description reflects the potential severity range that can be achieved depending on the target system configuration and execution environment.
The operational impact of CVE-2009-2460 extends beyond simple code execution, as it represents a significant threat to web server security and data integrity within academic institutions and publishing platforms that rely on mathematical rendering capabilities. Systems utilizing vulnerable versions of mathTeX become susceptible to remote code execution attacks, which could allow unauthorized users to gain control over web servers, access sensitive data, or use the compromised systems as launching points for further attacks within network infrastructure. The vulnerability's remote attack vector means that exploitation does not require local access to the system, making it particularly dangerous for publicly accessible web applications. Organizations running vulnerable versions face potential data breaches, service disruption, and compliance violations, especially in regulated environments where mathematical content is frequently processed and displayed.
Mitigation strategies for this vulnerability primarily focus on immediate remediation through software updates, with the recommended approach being the deployment of mathTeX versions released after 20090713 that contain proper input validation and bounds checking mechanisms. System administrators should also implement network-level protections such as web application firewalls and input filtering rules that can detect and block suspicious patterns in CGI parameter values. The implementation of proper secure coding practices, including the use of modern programming techniques that avoid vulnerable functions like sprintf and strcpy, would have prevented this vulnerability from occurring in the first place. Additionally, organizations should consider implementing principle of least privilege for web server processes, regular security audits of web applications, and monitoring for unusual access patterns that may indicate exploitation attempts. The vulnerability demonstrates the critical importance of keeping third-party web applications updated and maintaining comprehensive security awareness regarding mathematical rendering components that process user input, as these systems often become targets for sophisticated attacks due to their accessibility and the valuable content they handle.