CVE-2002-0359 in IRIX
Summary
by MITRE
xfsmd for IRIX 6.5 through 6.5.16 uses weak authentication, which allows remote attackers to call dangerous RPC functions, including those that can mount or unmount xfs file systems, to gain root privileges.
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Analysis
by VulDB Data Team • 10/24/2024
The vulnerability described in CVE-2002-0359 represents a critical security flaw in the xfsmd daemon component of SGI IRIX operating systems version 6.5 through 6.5.16. This issue stems from insufficient authentication mechanisms within the Remote Procedure Call (RPC) framework that governs file system management operations. The xfsmd daemon is responsible for managing XFS file systems and provides remote interfaces for mounting and unmounting operations. When the system fails to properly authenticate incoming RPC requests, it creates an exploitable condition where unauthorized remote attackers can execute privileged operations without proper authorization.
The technical flaw manifests in the weak authentication implementation within the xfsmd service, which operates under the Common Weakness Enumeration framework as CWE-287 - Improper Authentication. This weakness allows attackers to bypass normal access controls and invoke dangerous RPC functions that are typically restricted to privileged users. The daemon's RPC interface lacks proper credential verification mechanisms, enabling any remote entity to submit malicious requests that trigger file system mount and unmount operations. These operations, when executed with elevated privileges, can be leveraged to gain root access to the compromised system.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass complete system compromise. Attackers exploiting this weakness can manipulate file system operations to gain root privileges, potentially leading to persistent access, data exfiltration, or further network infiltration. The vulnerability is particularly concerning because it operates at the kernel level through legitimate system interfaces, making detection more challenging. According to MITRE ATT&CK framework, this vulnerability maps to T1068 - Exploitation for Privilege Escalation and T1566 - Phishing, as it represents an unauthenticated remote exploitation vector that can be leveraged to establish persistent access to compromised systems.
Mitigation strategies for this vulnerability should focus on implementing proper authentication mechanisms and access controls for the xfsmd service. System administrators should ensure that RPC services are properly configured with strong authentication and that unnecessary remote access is disabled. The recommended approach includes implementing firewall rules to restrict access to the affected RPC ports, applying vendor-specific patches or updates, and disabling the xfsmd service if it is not essential for system operations. Additionally, network segmentation and monitoring should be implemented to detect unauthorized RPC access attempts. Organizations should also consider implementing intrusion detection systems that can identify suspicious RPC traffic patterns and alert security teams to potential exploitation attempts. The vulnerability highlights the importance of proper authentication implementation in system services and demonstrates how weak authentication can lead to complete system compromise through seemingly legitimate administrative functions.