CVE-2003-1077 in Solaris
Summary
by MITRE
Unknown vulnerability in UFS for Solaris 9 for SPARC, with logging enabled, allows local users to cause a denial of service (UFS file system hang).
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Analysis
by VulDB Data Team • 08/27/2019
The vulnerability identified as CVE-2003-1077 represents a significant denial of service weakness within the Universal File System implementation of Solaris 9 operating on SPARC architecture. This issue specifically manifests when the UFS file system has logging functionality enabled, creating a condition where local authenticated users can exploit a flaw in the file system's handling of certain operations that results in complete system hang or unresponsiveness. The vulnerability stems from inadequate error handling or resource management within the UFS logging mechanism that fails to properly recover from specific operational states.
The technical nature of this flaw resides in the interaction between the UFS file system's logging capabilities and the underlying storage management operations. When logging is enabled, the system maintains transactional records of file system modifications to ensure consistency and recovery capabilities. However, under certain conditions involving local user actions, the logging subsystem enters a state where it cannot properly complete or abort transactions, leading to a deadlock condition that affects the entire file system. This behavior aligns with CWE-362, which describes race conditions that can lead to denial of service through improper synchronization or resource management. The vulnerability's impact is particularly concerning because it affects the core file system operations that all system processes depend upon, making it a critical weakness in the operating system's stability.
From an operational perspective, this vulnerability presents a substantial risk to system availability and reliability. Local users who can authenticate to the system gain the ability to trigger a condition that renders the entire file system inaccessible, effectively causing a denial of service that can impact all running applications and services dependent on file system access. The attack vector is particularly dangerous because it requires only local authentication, meaning that any user with valid credentials can potentially exploit this weakness. The system hang condition typically requires manual intervention to recover, including system reboot or forced shutdown procedures that can result in data loss or corruption. This vulnerability directly impacts the availability component of the CIA triad and can be categorized under the ATT&CK technique T1499.1, which involves the use of denial of service attacks against file systems or storage systems.
The mitigation strategies for CVE-2003-1077 primarily focus on either disabling the problematic logging feature or applying appropriate system updates and patches from Oracle. Organizations should consider disabling UFS logging functionality if it is not absolutely required for their operational needs, as this provides an immediate workaround to prevent exploitation. System administrators should also implement comprehensive monitoring solutions to detect unusual file system behavior that might indicate exploitation attempts. Regular patch management practices become essential for maintaining system security, as Oracle would have addressed this vulnerability in subsequent security updates. Additionally, implementing proper access controls and privilege management can help limit the potential impact by restricting local user access to system-critical functions. The vulnerability demonstrates the importance of thorough testing of file system features, particularly those involving transactional operations, and highlights the need for robust error handling mechanisms in critical system components. Organizations should also consider implementing redundant storage solutions or failover mechanisms to maintain availability during potential exploitation events.