CVE-2004-1204 in FluxBot
Summary
by MITRE
FluxBox 0.9.10 and earlier versions allows local users to cause a denial of service (application crash) by calling Xman with a long -title value, possibly triggering a buffer overflow.
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Analysis
by VulDB Data Team • 03/26/2019
The vulnerability identified as CVE-2004-1204 affects FluxBox window manager versions 0.9.10 and earlier, presenting a significant security risk through a local privilege escalation vector that can result in denial of service conditions. This flaw specifically manifests when the Xman utility, which is part of the FluxBox environment, processes command line arguments containing excessively long -title parameters. The issue stems from inadequate input validation and memory management within the application's argument parsing mechanism, creating a scenario where malformed input can lead to application instability and potential system disruption.
The technical implementation of this vulnerability involves a classic buffer overflow condition that occurs during the processing of extended title strings passed to the Xman utility. When a local user provides a -title argument exceeding the allocated buffer space, the application fails to properly handle the overflow condition, resulting in memory corruption that ultimately causes the application to crash. This behavior aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a fundamental flaw in input sanitization and memory boundary checking. The vulnerability is particularly concerning because it operates within a local context, meaning any user with access to the system can exploit it to disrupt the window management environment without requiring elevated privileges.
The operational impact of this vulnerability extends beyond simple application crashes, as it can severely compromise the user experience and potentially create opportunities for further exploitation. When the Xman utility crashes, it can disrupt the entire FluxBox environment, forcing users to restart their graphical sessions and potentially losing unsaved work. The denial of service condition affects the stability of the desktop environment, which can be particularly problematic in professional settings where system uptime is critical. Additionally, the vulnerability's exploitation requires minimal technical knowledge, making it accessible to users who may not possess advanced security expertise, thereby increasing the potential attack surface.
From a cybersecurity perspective, this vulnerability demonstrates the importance of proper input validation and memory management in graphical applications that handle user-provided data. The issue highlights the need for robust buffer overflow protection mechanisms in desktop environments where utilities like Xman interact with user input. Organizations should implement comprehensive patch management strategies to address this vulnerability, as the affected FluxBox versions are no longer supported and lack security updates. The remediation approach should focus on upgrading to patched versions of FluxBox or implementing application-level restrictions that limit the length of input parameters to prevent exploitation. This vulnerability serves as a reminder of the critical importance of validating all user inputs and maintaining secure coding practices in desktop environments where multiple applications interact with system resources.