CVE-2005-2280 in Security Agent
Summary
by MITRE
Cisco Security Agent (CSA) 4.5 allows remote attackers to cause a denial of service (system crash) via a crafted IP packet.
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Analysis
by VulDB Data Team • 07/03/2019
Cisco Security Agent version 4.5 contains a critical buffer overflow vulnerability that can be exploited by remote attackers to trigger a system crash through specially crafted IP packets. This vulnerability resides in the packet processing functionality of the security agent software, where insufficient input validation occurs when handling incoming network traffic. The flaw specifically manifests when the CSA software receives malformed IP packets that exceed the allocated buffer space, causing the application to crash and resulting in a denial of service condition that affects the entire system.
The technical implementation of this vulnerability aligns with common buffer overflow patterns found in network security applications, where network protocols are parsed without proper bounds checking. When the Cisco Security Agent processes these maliciously crafted packets, the software fails to validate the packet headers or payload lengths against predefined buffer limits, allowing an attacker to overflow memory structures and potentially execute arbitrary code or force system termination. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, representing a fundamental flaw in memory management practices within the application's network processing module.
The operational impact of this vulnerability extends beyond simple service disruption as it compromises the integrity of network security monitoring capabilities. Organizations relying on Cisco Security Agent for endpoint protection face significant risk when this vulnerability is exploited, as the system crash can occur without any indication of malicious activity, making detection and response more challenging. The remote nature of the attack means that threat actors can exploit this flaw from outside the network perimeter without requiring local access or credentials, making it particularly dangerous for security-conscious environments. This vulnerability directly impacts the availability aspect of the CIA triad by potentially rendering critical security monitoring systems ineffective.
Mitigation strategies for this vulnerability should include immediate deployment of Cisco's official security patches and updates that address the buffer overflow in the packet processing module. Network administrators should implement additional monitoring to detect unusual traffic patterns that may indicate exploitation attempts, while also considering network segmentation to limit the potential impact of successful attacks. The vulnerability demonstrates the importance of proper input validation and memory management practices in security software, aligning with ATT&CK technique T1499.002 for network denial of service. Organizations should also consider implementing network access controls and intrusion detection systems to identify and block malicious traffic patterns associated with this specific vulnerability, while maintaining regular security assessments to identify similar flaws in other network security applications.