CVE-2004-0513 in Mac OS X
Summary
by MITRE
Unspecified vulnerability in Mac OS X before 10.3.4 has unknown impact and attack vectors related to "logging when tracing system calls."
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Analysis
by VulDB Data Team • 06/28/2019
The vulnerability identified as CVE-2004-0513 represents a security weakness in Mac OS X operating systems prior to version 10.3.4, specifically concerning the system's logging mechanisms when tracing system calls. This issue falls under the broader category of operating system security flaws that can potentially compromise system integrity and confidentiality. The unspecified nature of both the impact and attack vectors suggests that the vulnerability may have manifested in multiple ways or was not fully understood at the time of reporting, which is common with early-stage security discoveries. System call tracing is a fundamental debugging and monitoring feature that allows developers and administrators to observe the interactions between applications and the kernel, making this aspect of the operating system particularly sensitive to security flaws. The vulnerability's presence in the logging subsystem indicates that malicious actors could potentially exploit weaknesses in how system call traces are recorded and managed, possibly leading to information disclosure or system compromise. This type of vulnerability is particularly concerning because system call tracing is often used for security monitoring, debugging, and forensic analysis, meaning that any weakness in this area could be exploited to hide malicious activities or gain unauthorized access to system resources.
The technical flaw in this vulnerability likely resides within the kernel-level logging mechanisms that handle system call trace data in Mac OS X versions before 10.3.4. When system calls are traced, the operating system typically records various parameters, timestamps, and execution contexts to provide administrators with insights into system behavior and application interactions. The unspecified nature of the vulnerability suggests that it may involve buffer overflows, improper input validation, or race conditions in the logging code that processes trace data. Such issues can occur when the system does not properly validate or sanitize data before storing it in log files, potentially allowing attackers to craft malicious inputs that could cause the logging system to behave unpredictably. The vulnerability may also involve improper access controls or privilege escalation mechanisms within the logging subsystem, enabling unauthorized users to manipulate or access trace logs that should remain protected. According to CWE classification, this vulnerability could relate to CWE-125, which deals with out-of-bounds read conditions, or CWE-119, which covers weak buffer access, depending on the specific implementation flaw. These types of buffer-related vulnerabilities are particularly dangerous in kernel space where they can lead to privilege escalation or system crashes.
The operational impact of CVE-2004-0513 extends beyond simple data corruption or system instability, as it could potentially enable attackers to gain unauthorized access to system information or manipulate system call logging for malicious purposes. In a security context, system call tracing is often used for intrusion detection, compliance monitoring, and forensic analysis, making any vulnerability in this area potentially catastrophic for system security. Attackers who could exploit this vulnerability might be able to manipulate trace logs to hide their activities, potentially evading detection mechanisms that rely on system call monitoring. The vulnerability could also allow for privilege escalation attacks, where an unprivileged user could gain elevated system privileges through manipulation of the logging subsystem. Additionally, if the vulnerability involves information disclosure, attackers might be able to extract sensitive system information from the trace logs, potentially including user credentials, system configuration details, or other confidential data. From an ATT&CK framework perspective, this vulnerability could map to techniques involving privilege escalation, defense evasion, and credential access, as it provides potential attack paths that align with these adversary tactics and techniques. The impact would be particularly severe in enterprise environments where system call tracing is actively used for security monitoring and compliance requirements.
Mitigation strategies for CVE-2004-0513 should focus on immediate system updates and configuration hardening measures to protect against potential exploitation. The most effective immediate response is to upgrade to Mac OS X 10.3.4 or later versions, which would contain the patched logging mechanisms that address the vulnerability. System administrators should also implement additional monitoring and access controls for system call trace files, ensuring that these sensitive logs are properly protected and that only authorized personnel have access to them. Regular security audits should be conducted to verify that system call tracing is functioning correctly and that no unauthorized modifications have occurred to the logging subsystem. Network segmentation and access control measures should be implemented to limit the potential impact of any exploitation attempts. Security professionals should also consider implementing intrusion detection systems that can monitor for unusual patterns in system call trace data that might indicate exploitation attempts. The vulnerability's nature suggests that defensive measures should include input validation and sanitization for all system call trace data processing, as well as implementing proper privilege separation between different system components. Organizations should also establish incident response procedures specifically tailored to handle potential exploitation of kernel-level logging vulnerabilities, ensuring that security teams are prepared to respond quickly to any signs of compromise. Regular patch management processes should be strengthened to ensure that operating system updates are applied promptly, particularly for critical security vulnerabilities that affect core system components like the kernel logging mechanisms.