CVE-2004-0151 in Xitalk
Summary
by MITRE
Unknown vulnerability in xitalk 1.1.11 and earlier allows local users to execute arbitrary commands.
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Analysis
by VulDB Data Team • 04/30/2019
The vulnerability identified as CVE-2004-0151 represents a critical security flaw within the xitalk 1.1.11 software and earlier versions that enables local attackers to execute arbitrary commands on affected systems. This issue stems from insufficient input validation and improper handling of user-supplied data within the application's command processing mechanisms. The vulnerability specifically affects systems where xitalk is installed and running with elevated privileges, creating a significant attack surface for local threat actors who may already have access to the system. The flaw exists in the software's ability to process external inputs without adequate sanitization, potentially allowing malicious command injection attacks. Given that xitalk is typically used for speech synthesis and text-to-speech functionality, the vulnerability could be exploited through various input methods that the application accepts. The local execution aspect of this vulnerability means that an attacker must already have some level of access to the target system, but once achieved, they can leverage this flaw to gain further control or escalate their privileges. This type of vulnerability is particularly concerning because it operates at the application level rather than at the system level, making it more difficult to detect through traditional network-based security measures.
The technical nature of this vulnerability aligns with common command injection flaws that fall under the CWE-77 category, which specifically addresses command injection vulnerabilities in software applications. The flaw demonstrates poor input validation practices where user-provided data is directly incorporated into system commands without proper sanitization or escaping mechanisms. Attackers could potentially exploit this by crafting malicious input that gets executed as shell commands when the application processes user requests. The vulnerability's classification as a local privilege escalation issue indicates that while the initial access vector requires local system access, the impact can be significant enough to allow attackers to execute commands with elevated privileges. This type of vulnerability often arises from improper use of system call functions or shell execution methods within applications, where developers fail to properly validate or escape inputs before incorporating them into system commands. The attack surface is primarily limited to systems running vulnerable versions of xitalk, but the potential for privilege escalation makes it particularly dangerous in multi-user environments where local access might be obtained through various means.
The operational impact of CVE-2004-0151 extends beyond simple command execution capabilities, potentially allowing attackers to gain persistent access to affected systems, escalate privileges, or even establish backdoors for future access. Local command execution vulnerabilities like this one can be leveraged to perform reconnaissance activities, gather sensitive information, or deploy additional malicious payloads. The vulnerability's presence in speech synthesis software creates unique exploitation opportunities since these applications often run with elevated permissions to access system audio devices and resources. Security professionals should consider this vulnerability as part of broader attack chains where initial access might be gained through social engineering, phishing, or other means, followed by exploitation of this local privilege escalation flaw. The impact is particularly severe in enterprise environments where multiple users might have access to systems running vulnerable versions of xitalk, creating potential for widespread compromise. Organizations using this software should conduct immediate vulnerability assessments to identify all systems running affected versions and implement appropriate remediation measures. The long-term operational impact includes potential data exfiltration, system compromise, and the establishment of persistent threat presence within network environments.
Mitigation strategies for CVE-2004-0151 should focus on immediate remediation through software updates and patches provided by the vendor. Organizations must prioritize updating to versions of xitalk that address this vulnerability, as no reliable workarounds exist for this specific flaw. System administrators should implement strict access controls and monitoring to detect unauthorized local access attempts that could lead to exploitation of this vulnerability. The implementation of principle of least privilege should be enforced, ensuring that xitalk applications run with minimal required permissions to reduce the potential impact of successful exploitation. Network segmentation and monitoring solutions should be deployed to detect unusual command execution patterns that might indicate exploitation attempts. Regular vulnerability assessments should include checks for outdated applications like xitalk, and automated patch management systems should be implemented to ensure timely remediation of known vulnerabilities. Security teams should also consider implementing application whitelisting policies that restrict execution of unauthorized binaries and commands. Additionally, system hardening measures including disabling unnecessary services, removing unused accounts, and implementing proper logging and monitoring should be applied to reduce the overall attack surface. The vulnerability's age and the lack of modern support for the affected software versions make it crucial for organizations to plan for migration away from vulnerable systems to more secure alternatives.