CVE-2006-0176 in xmame
Summary
by MITRE
Buffer overflow in certain functions in src/fileio.c and src/unix/fileio.c in xmame before 11 January 2006 may allow local users to gain privileges via a long (1) -lang, (2) -ctrlr, (3) -pb, or (4) -rec argument on many operating systems, and via a long (5) -jdev argument on Ubuntu Linux.
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Analysis
by VulDB Data Team • 02/03/2025
The vulnerability identified as CVE-2006-0176 represents a critical buffer overflow flaw affecting the xmame emulation software suite prior to its 11 January 2006 release. This security weakness resides within the file input/output handling functions located in the src/fileio.c and src/unix/fileio.c source code files, creating a pathway for local privilege escalation attacks. The vulnerability manifests when the software processes command-line arguments related to language settings, controller configurations, playback controls, and recording parameters, making it particularly dangerous in environments where users might have access to execute the application.
The technical implementation of this buffer overflow stems from inadequate input validation and bounds checking within the argument parsing routines. When the xmame application encounters command-line parameters such as -lang for language specification, -ctrlr for controller configuration, -pb for playback functionality, or -rec for recording features, the software fails to properly validate the length of these arguments before copying them into fixed-size buffers. This allows attackers to provide excessively long argument values that exceed the allocated buffer space, causing memory corruption that can be exploited to execute arbitrary code with elevated privileges. The vulnerability specifically affects the Ubuntu Linux operating system when processing the -jdev argument, indicating platform-specific considerations in the exploitation vector.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it enables local users to escalate their privileges to the level of the running process, potentially gaining root access to the system. Attackers can leverage this flaw by crafting specially crafted command-line arguments that overflow the targeted buffers and overwrite critical memory segments including return addresses or function pointers. This privilege escalation capability makes the vulnerability particularly dangerous in multi-user environments where less privileged users might have access to execute the affected xmame application. The vulnerability's persistence across multiple operating systems suggests a fundamental flaw in the codebase rather than a platform-specific issue.
Security mitigations for this vulnerability should focus on implementing proper input validation and bounds checking mechanisms throughout the argument parsing functions. The recommended approach involves enforcing strict limits on argument lengths before buffer copying operations, implementing stack canaries for buffer overflow detection, and utilizing compiler-based protections such as stack smashing detection and address space layout randomization. Additionally, applying the vendor-supplied patches released on or before 11 January 2006 would resolve the underlying buffer overflow conditions. This vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of improper input validation that enables privilege escalation attacks. The ATT&CK framework categorizes this as a privilege escalation technique through code injection, where the buffer overflow serves as the initial exploitation vector for gaining elevated system access.