CVE-2001-1119 in xmcd
Summary
by MITRE
cda in xmcd 3.0.2 and 2.6 in SuSE Linux allows local users to overwrite arbitrary files via a symlink attack.
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Analysis
by VulDB Data Team • 04/23/2025
The vulnerability identified as CVE-2001-1119 affects the cda component within xmcd versions 3.0.2 and 2.6 distributed with SuSE Linux operating systems. This issue represents a classic file system race condition that exploits improper handling of temporary files during the execution of the cd audio playback utility. The flaw specifically manifests when the application creates temporary files without adequate security measures to prevent symbolic link attacks, allowing local attackers to manipulate the file system in ways that could lead to privilege escalation or arbitrary code execution.
The technical implementation of this vulnerability stems from the application's failure to properly validate file paths when creating temporary files for audio data processing. When xmcd executes, it generates temporary files in predictable locations without sufficient checks to ensure these files are not symbolic links pointing to sensitive system locations. This creates a window of opportunity where a local attacker can establish malicious symbolic links before the application creates its temporary files, effectively redirecting file operations to arbitrary locations on the file system. The vulnerability operates under the broader category of CWE-377 - Insecure Temporary File Creation and CWE-378 - Creation of Temporary File With Insecure Permissions, both of which fall under the category of insecure file handling practices that have been consistently documented in security literature since the early 2000s.
The operational impact of this vulnerability extends beyond simple file overwrites to potentially enable more serious security compromises within the affected system. Local users who can execute the xmcd utility can leverage this flaw to overwrite critical system files, configuration files, or even files owned by other users or system processes. This capability can be particularly dangerous when combined with other attack vectors or when the vulnerable application runs with elevated privileges. The attack requires local system access and the ability to create symbolic links, which are typically available to regular users on most Unix-like systems, making this vulnerability exploitable in numerous scenarios including user privilege escalation attacks and potential persistence mechanisms. According to ATT&CK framework category T1059 for Command and Scripting Interpreter and T1068 for Exploitation for Privilege Escalation, this vulnerability could enable adversaries to establish more persistent access or escalate their privileges within the compromised system.
Mitigation strategies for this vulnerability should focus on addressing the root cause through proper temporary file handling practices and system hardening measures. The immediate solution involves updating to patched versions of xmcd or applying the appropriate security patches provided by SuSE Linux. System administrators should also implement proper file system permissions and ensure that temporary file creation routines use secure methods such as creating files with restrictive permissions and using unique naming schemes to prevent predictable file paths. Additionally, implementing proper access controls and monitoring for unauthorized symbolic link creation can help detect potential exploitation attempts. The vulnerability highlights the importance of following secure coding practices such as those outlined in the CERT Secure Coding Standards, specifically addressing issues related to temporary file creation and file system race conditions that remain relevant in modern security practices. Organizations should also consider implementing application whitelisting controls to restrict execution of potentially vulnerable applications and ensure that all system components are regularly updated to address known vulnerabilities.