CVE-2007-1324 in 560
Summary
by MITRE
SnapGear 560, 585, 580, 640, 710, and 720 appliances before the 3.1.4u5 firmware allow remote attackers to cause a denial of service (complete packet loss) via a packet flood, a different vulnerability than CVE-2006-4613.
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Analysis
by VulDB Data Team • 03/13/2015
The vulnerability identified as CVE-2007-1324 affects SnapGear series network appliances including models 560, 585, 580, 640, 710, and 720 devices operating with firmware versions prior to 3.1.4u5. This represents a significant security flaw that enables remote attackers to execute a denial of service attack by overwhelming the affected devices with packet floods. The vulnerability specifically targets the network processing capabilities of these appliances, causing complete packet loss and rendering the network services unavailable to legitimate users. Unlike CVE-2006-4613 which addresses a different type of denial of service condition, this vulnerability focuses on the specific handling of network traffic floods that can completely disrupt the appliance's ability to process incoming packets.
The technical flaw manifests in the insufficient filtering and rate limiting mechanisms within the network stack of these SnapGear appliances. When subjected to a packet flood attack, the devices fail to properly manage the excessive network traffic load, leading to buffer overflows or resource exhaustion that results in complete packet loss. This type of vulnerability falls under the category of network-based denial of service attacks where the attacker leverages the appliance's inability to handle high volumes of traffic. The vulnerability is classified as a weakness in resource management and traffic processing, aligning with CWE-400 which covers unspecified resource management issues. The attack vector is remote, meaning an attacker does not need physical access to the device to exploit this vulnerability, making it particularly dangerous in networked environments.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the entire network infrastructure that relies on these appliances for routing and network management functions. When the affected appliances experience complete packet loss, network connectivity for connected devices becomes severely impaired or completely severed, affecting business operations and potentially leading to significant financial losses. The vulnerability affects the availability aspect of the CIA triad, specifically targeting the system's ability to provide continuous service to authorized users. Organizations relying on these appliances for network security or routing functions face critical operational risks, as the denial of service can persist until the device is manually rebooted or the firmware is updated. This type of attack can be particularly devastating in mission-critical environments where network availability is essential for operations.
Mitigation strategies for this vulnerability should focus on immediate firmware updates to version 3.1.4u5 or later, which contain the necessary patches to address the packet flood handling issues. Network administrators should implement rate limiting and traffic filtering mechanisms at network boundaries to reduce the impact of potential attacks before they reach the vulnerable appliances. Additionally, monitoring systems should be deployed to detect unusual traffic patterns that may indicate packet flood attacks. The implementation of intrusion detection systems can help identify and alert on suspicious network activity that could be indicative of exploitation attempts. Organizations should also consider network segmentation to isolate vulnerable appliances from critical network segments and implement redundant network paths to ensure service availability even if individual appliances are compromised. This vulnerability demonstrates the importance of maintaining current firmware versions and implementing comprehensive network security monitoring practices to detect and respond to denial of service attacks effectively. The attack pattern aligns with techniques described in the ATT&CK framework under the denial of service category, emphasizing the need for robust network resilience measures and proactive security management to prevent exploitation of such vulnerabilities.