CVE-2014-1672 in Security Gateway
Summary
by MITRE
Check Point R75.47 Security Gateway and Management Server does not properly enforce Anti-Spoofing when the routing table is modified and the "Get - Interfaces with Topology" action is performed, which allows attackers to bypass intended access restrictions.
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Analysis
by VulDB Data Team • 05/27/2017
The vulnerability identified as CVE-2014-1672 affects Check Point R75.47 Security Gateway and Management Server implementations where the anti-spoofing mechanisms fail to properly enforce security policies when routing table modifications occur alongside the "Get - Interfaces with Topology" action. This flaw represents a significant weakness in network security enforcement that can be exploited to circumvent access controls and potentially gain unauthorized network access. The issue stems from the improper handling of routing table updates within the security gateway's processing pipeline, creating a window where spoofed traffic can bypass intended security restrictions.
This vulnerability operates at the intersection of network routing and security policy enforcement, specifically targeting the anti-spoofing mechanisms that are designed to prevent IP address spoofing attacks. The technical flaw occurs when the system processes routing table modifications in conjunction with topology interface queries, allowing malicious actors to manipulate network traffic flows through the security gateway. The root cause lies in the insufficient validation of routing table changes and their impact on interface topology information, which should normally be synchronized with anti-spoofing policies to maintain network integrity. This weakness aligns with CWE-284, which addresses improper access control, and specifically relates to the failure to properly enforce security policies during dynamic network configuration changes.
The operational impact of this vulnerability is substantial as it allows attackers to bypass intended access restrictions that are fundamental to network security. An attacker could potentially exploit this flaw to route traffic through the security gateway in ways that circumvent the anti-spoofing protections, enabling them to spoof IP addresses and gain access to network segments that should be protected. The vulnerability is particularly concerning because it operates at the core of network security enforcement mechanisms, potentially allowing for lateral movement within networks and unauthorized access to sensitive systems. The impact extends beyond simple access bypass to include potential data exfiltration, network disruption, and compromise of security posture across the protected network environment.
Mitigation strategies for this vulnerability should focus on immediate patching of affected Check Point R75.47 systems to address the specific anti-spoofing enforcement flaw. Organizations should implement monitoring for unauthorized routing table modifications and topology queries that could indicate exploitation attempts. Network segmentation and additional access controls should be deployed to limit the potential impact if the vulnerability is successfully exploited. The remediation process should include comprehensive testing of routing table changes and anti-spoofing policy enforcement to ensure that the patched systems properly validate interface topology information. Security teams should also consider implementing network behavior analysis tools to detect anomalous traffic patterns that might indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining proper security policy enforcement during dynamic network configuration changes, as outlined in the ATT&CK framework's network security policy enforcement techniques. Regular security assessments and vulnerability management processes should be enhanced to identify similar flaws in network security implementations, particularly those involving routing table modifications and interface topology handling.