CVE-2008-5685 in ScApp
Summary
by MITRE
Sun ScApp firmware 5.18.x, 5.19.x, and 5.20.0 through 5.20.10 on Sun Fire and Netra platforms allows remote attackers to access the System Controller (SC), the system console, and possibly the host OS, and cause a denial of service (shutdown or reboot), via spoofed IP packets.
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Analysis
by VulDB Data Team • 10/22/2018
The vulnerability identified as CVE-2008-5685 affects Sun ScApp firmware versions 5.18.x through 5.20.10 on Sun Fire and Netra server platforms. This represents a critical security flaw in the System Controller firmware that governs the management and operation of these enterprise servers. The vulnerability stems from insufficient authentication mechanisms within the firmware's network communication protocols, creating a pathway for unauthorized remote access to critical system components. The affected firmware versions demonstrate a fundamental weakness in the authentication architecture that controls access to the System Controller SC, which serves as the primary management interface for these servers. This flaw enables attackers to bypass normal access controls and gain unauthorized administrative privileges over the system's core management functions.
The technical exploitation of this vulnerability occurs through the manipulation of IP packets, specifically through spoofed network traffic that mimics legitimate system communications. The flaw allows attackers to inject malicious packets that appear to originate from trusted sources within the network infrastructure, thereby circumventing the firmware's authentication checks. This vulnerability operates at the network protocol level, specifically targeting the communication channels used by the System Controller for management operations. The attack vector relies on the firmware's inability to properly validate the authenticity of incoming IP packets, particularly those that contain commands for system console access, remote management functions, and host operating system interactions. The spoofing mechanism exploits weaknesses in the firmware's packet validation and source verification processes, allowing unauthorized entities to masquerade as legitimate management systems.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass complete system compromise and potential service disruption. An attacker who successfully exploits this vulnerability can gain access to the system console, which provides direct control over the server's operational functions and potentially full administrative privileges. This level of access enables the attacker to execute arbitrary commands, modify system configurations, and potentially access sensitive data stored within the system. The vulnerability also allows for denial of service attacks that can result in system shutdowns or forced reboots, disrupting critical business operations and potentially causing significant financial and operational losses. The ability to cause system reboots represents a particularly dangerous aspect of this vulnerability, as it can be used to create persistent disruptions to services or to cover up malicious activities by restarting the system and clearing logs.
Organizations affected by this vulnerability face significant security risks that require immediate attention and remediation. The remote nature of the attack means that adversaries can exploit this vulnerability from anywhere on the network without requiring physical access to the affected systems. This characteristic makes the vulnerability particularly dangerous in environments where network security controls may be insufficient or where the systems are accessible from untrusted networks. The potential for complete system compromise through this vulnerability aligns with CWE-287, which addresses improper authentication issues in software systems. The attack pattern described in this vulnerability corresponds to techniques documented in the ATT&CK framework under privilege escalation and defense evasion tactics, as attackers can use this flaw to gain elevated privileges and potentially avoid detection mechanisms. The vulnerability also demonstrates characteristics of CWE-310, which relates to cryptographic weaknesses in system components, as the authentication mechanisms fail to provide adequate protection against spoofed communications.
Mitigation strategies for this vulnerability should focus on immediate firmware updates and network segmentation measures to reduce the attack surface. Organizations must prioritize updating their Sun Fire and Netra systems to firmware versions that address this specific authentication flaw. The update process should include thorough testing to ensure compatibility with existing system configurations and applications. Network-level protections should include implementing strict access controls and monitoring for suspicious network traffic patterns that might indicate spoofing attempts. The implementation of network intrusion detection systems can help identify and alert on anomalous packet patterns that may indicate exploitation attempts. Additionally, organizations should consider implementing network segmentation to isolate critical systems from general network access and reduce the potential impact of successful exploitation. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other system components and ensure comprehensive protection against similar threats.