CVE-2003-0669 in Solaris
Summary
by MITRE
Unknown vulnerability in Solaris 2.6 through 9 causes a denial of service (system panic) via "a rare race condition" or an attack by local users.
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Analysis
by VulDB Data Team • 06/26/2019
The vulnerability identified as CVE-2003-0669 represents a critical system instability issue affecting Solaris operating systems from version 2.6 through 9. This weakness manifests as a denial of service condition that can result in complete system panic, effectively rendering the affected systems unusable and requiring manual intervention for recovery. The vulnerability stems from a race condition scenario that occurs under specific timing circumstances, making it particularly challenging to predict and reproduce in controlled environments. The nature of race conditions in operating system kernels typically involves multiple threads or processes accessing shared resources concurrently, where the outcome depends on the relative timing of these operations. This particular vulnerability exploits the timing dependencies within the kernel's resource management mechanisms, creating a scenario where concurrent access patterns can trigger catastrophic system failures. The vulnerability's classification as affecting multiple Solaris versions from 2.6 to 9 indicates it was a persistent flaw that remained unaddressed across several iterations of the operating system, suggesting deep-rooted issues within the kernel's concurrency control mechanisms.
The technical implementation of this vulnerability involves scenarios where local users can exploit the race condition to cause system panics through carefully orchestrated sequences of system calls or kernel operations. The race condition specifically impacts kernel data structures or synchronization primitives that are shared between different execution contexts, where the timing of operations creates a window of vulnerability. When the race condition occurs, it typically involves scenarios such as concurrent access to memory regions, manipulation of kernel data structures, or interference with interrupt handling mechanisms. The vulnerability's impact extends beyond simple service disruption as it can cause complete system crashes that require rebooting the entire operating system. This makes it particularly dangerous in production environments where system availability is critical. The exploitation requires local access to the system, meaning that attackers must already have user-level privileges or some form of system access, but the privilege escalation potential remains significant given the system-wide impact. The vulnerability's occurrence is described as "rare" which indicates that it does not manifest consistently under normal operating conditions, making it difficult to detect and address through standard security monitoring approaches.
The operational impact of CVE-2003-0669 extends beyond immediate system downtime to include potential data loss, service disruption, and increased administrative overhead for system recovery and maintenance. Organizations running affected Solaris versions face the risk of unexpected system outages that can affect critical business operations, particularly in environments where Solaris systems serve as core infrastructure components. The rarity of the condition means that administrators may not detect its presence until an incident occurs, creating a significant security blind spot. System administrators must implement monitoring solutions that can detect unusual system behavior patterns that might indicate the occurrence of the race condition. The vulnerability also represents a potential attack vector for malicious actors who might attempt to exploit it to cause service disruption or gain unauthorized access to system resources. The local user requirement for exploitation means that the vulnerability primarily affects environments where multiple users have access to the system, but it could be leveraged by attackers who have already compromised other accounts on the system. Organizations should consider the broader implications of this vulnerability within their overall security posture, particularly regarding privilege management and access controls.
Mitigation strategies for CVE-2003-0669 focus on both immediate remediation and long-term system hardening approaches. The primary recommendation involves applying vendor security patches and updates that address the underlying race condition in the Solaris kernel. System administrators should prioritize updating to patched versions of Solaris, as the vulnerability was addressed through kernel modifications that resolve the concurrency issues. In environments where immediate patching is not feasible, administrators can implement additional monitoring and logging mechanisms to detect potential race condition scenarios before they result in system panics. Network segmentation and access control measures can limit the potential for local users to exploit this vulnerability by reducing the number of accounts with system access. The vulnerability's nature as a kernel-level race condition suggests that system hardening measures such as disabling unnecessary services, implementing strict user access controls, and maintaining regular system backups become critical defensive measures. Organizations should also consider implementing intrusion detection systems that can monitor for unusual system behavior patterns that might indicate the occurrence of the race condition. From a compliance perspective, this vulnerability aligns with various security standards including those related to system integrity and availability, and its remediation should be prioritized as part of overall security maintenance programs. The vulnerability demonstrates the importance of regular security assessments and patch management processes to address persistent kernel-level issues that can affect system stability and availability.