CVE-2007-6519 in Tru64
Summary
by MITRE
Unspecified vulnerability in the File-on-File Mounting File System (FFM) in HP Tru64 UNIX 5.1B-4 and 5.1B-3 allows local users to cause a denial of service (system crash) via unspecified vectors.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 09/13/2018
The vulnerability identified as CVE-2007-6519 resides within the File-on-File Mounting File System component of HP Tru64 UNIX operating systems version 5.1B-4 and 5.1B-3, representing a critical security flaw that enables local attackers to trigger system-wide denial of service conditions. This issue falls under the broader category of operating system kernel vulnerabilities that can compromise system stability and availability. The File-on-File Mounting File System serves as a crucial component for managing file access and mounting operations within the Tru64 UNIX environment, making it a potential target for adversaries seeking to disrupt system operations. The unspecified nature of the attack vectors suggests that multiple pathways exist for exploitation, potentially encompassing various file system operations, memory handling mechanisms, or kernel interaction patterns that could lead to system instability.
The technical implementation of this vulnerability demonstrates a fundamental flaw in the kernel-level file system handling mechanisms that govern how the FFM component processes file operations and mount requests. Local users with access to the system can leverage this weakness through various means that ultimately result in kernel panic conditions or system crashes. The exploitation typically involves crafting specific file system operations or mount parameters that trigger memory corruption, buffer overflows, or improper resource handling within the FFM subsystem. This type of vulnerability aligns with CWE-119, which addresses weaknesses in memory handling, and represents a classic example of a kernel-level buffer overflow or memory corruption issue that can be exploited to cause system-wide crashes. The attack vector likely involves manipulating file system metadata, processing malformed mount requests, or exploiting race conditions within the file system locking mechanisms.
The operational impact of CVE-2007-6519 extends beyond simple system disruption, as it represents a significant threat to system availability and business continuity within enterprise environments that rely on HP Tru64 UNIX systems. Organizations running these older operating system versions face potential downtime, data loss, and service interruptions when local users exploit this vulnerability. The local nature of the attack means that any user with access to the system can potentially trigger the denial of service condition, making it particularly dangerous in multi-user environments where privilege escalation might occur. System administrators must consider the implications for mission-critical applications that depend on continuous availability, as unexpected system crashes can lead to data corruption, transaction failures, and extended recovery periods. The vulnerability also creates opportunities for attackers to establish persistent access points or to conduct more sophisticated attacks that leverage the system instability as a foothold for further exploitation.
Mitigation strategies for this vulnerability should focus on immediate patch deployment and system hardening measures that address the underlying kernel-level flaw in the FFM subsystem. Organizations should prioritize applying the official HP security patches and updates that specifically target this vulnerability, as the manufacturer would have developed fixes to address the memory handling issues within the file system component. System administrators should implement additional monitoring and logging mechanisms to detect unusual file system activity or potential exploitation attempts, particularly around mount operations and file access patterns. The implementation of privilege separation, user access controls, and restricted shell environments can help minimize the potential impact of local users who might attempt to exploit this vulnerability. Additionally, organizations should consider implementing intrusion detection systems that can monitor for abnormal system behavior patterns that might indicate exploitation attempts, aligning with ATT&CK technique T1499 for system disruption and T1068 for local privilege escalation. Regular security assessments and vulnerability scanning should be conducted to identify similar issues within the operating system and to ensure that all known vulnerabilities are properly addressed through appropriate patch management procedures.