CVE-2005-0671 in Ca3de
Summary
by MITRE
Format string vulnerability in Carsten s 3D Engine (Ca3DE), March 2004 version and earlier, allows remote attackers to execute arbitrary code via format string specifiers in a command.
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Analysis
by VulDB Data Team • 01/26/2025
The vulnerability identified as CVE-2005-0671 represents a critical format string flaw within Carsten s 3D Engine version March 2004 and earlier releases. This software library, designed for 3D graphics rendering, contains a fundamental programming error that occurs when user-supplied input is processed through format string functions without proper validation or sanitization. The vulnerability specifically manifests when the application processes commands containing format specifiers that are intended for printf-style functions but are instead interpreted as directives for code execution. This type of flaw falls under the Common Weakness Enumeration category CWE-134, which describes weaknesses related to the use of format strings that are not properly controlled or validated.
The technical implementation of this vulnerability stems from improper handling of user input within the command processing pipeline of the Ca3DE engine. When attackers supply malicious input containing format specifiers such as %x, %s, or %n, these sequences can be exploited to manipulate the execution flow of the application. The %n format specifier is particularly dangerous as it writes the number of characters output so far to a memory location specified by the corresponding argument, enabling attackers to perform memory corruption attacks and potentially overwrite critical program variables or function pointers. This vulnerability operates at the application layer and can be exploited remotely through network-based command interfaces that utilize the vulnerable 3D engine functionality.
The operational impact of this vulnerability is severe and encompasses multiple attack vectors that can lead to complete system compromise. Remote attackers can leverage this flaw to execute arbitrary code with the privileges of the affected application, potentially leading to full system control. The vulnerability can be exploited through various network protocols that utilize the Ca3DE engine for 3D rendering tasks, including but not limited to web applications, gaming servers, or multimedia applications that depend on this graphics library. The attack surface is broad since the vulnerability exists in a widely used 3D engine that may be integrated into numerous commercial and open source applications. According to the MITRE ATT&CK framework, this vulnerability maps to technique T1059.007 for command and scripting interpreter, specifically through the use of format string exploits to gain code execution capabilities.
Mitigation strategies for this vulnerability require immediate remediation efforts including upgrading to patched versions of Carsten s 3D Engine, which would address the underlying format string handling issues. Organizations should implement proper input validation and sanitization measures to prevent format specifiers from being processed as commands, using functions such as snprintf instead of sprintf to prevent buffer overflows. The principle of least privilege should be enforced by running applications with minimal required permissions, and network segmentation should be implemented to limit access to vulnerable services. Additionally, application-level firewalls and intrusion detection systems can be configured to monitor for suspicious command sequences containing format specifiers, providing an additional layer of defense against exploitation attempts. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other components of the software stack, particularly focusing on string handling and input validation mechanisms that align with the security guidelines established by the OWASP Top Ten and NIST cybersecurity frameworks.