CVE-2016-8597 in libcsp
Summary
by MITRE
Buffer overflow in the csp_sfp_recv_fp in csp_sfp.c in the libcsp library v1.4 and earlier allows hostile components with network access to the SFP underlying network layers to execute arbitrary code via specially crafted SFP packets.
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Analysis
by VulDB Data Team • 08/14/2025
The vulnerability identified as CVE-2016-8597 represents a critical buffer overflow flaw within the libcsp library version 1.4 and earlier implementations. This issue specifically affects the csp_sfp_recv_fp function located in the csp_sfp.c source file, which handles the reception of SFP (Space Framework Protocol) packets within network communication systems. The libcsp library serves as a core component for space communication protocols, particularly in satellite and aerospace applications where reliable network layer functionality is paramount for mission-critical operations.
The technical nature of this vulnerability stems from insufficient input validation and boundary checking within the SFP packet processing mechanism. When hostile network components transmit specially crafted SFP packets to systems utilizing vulnerable libcsp versions, the csp_sfp_recv_fp function fails to properly validate packet sizes and content lengths before copying data into fixed-size buffers. This fundamental flaw allows attackers to overflow these buffers and overwrite adjacent memory locations, potentially leading to arbitrary code execution. The vulnerability operates at the network protocol layer, making it particularly dangerous as it can be exploited remotely without requiring physical access to the target system.
The operational impact of this vulnerability extends beyond simple code execution, as it fundamentally compromises the integrity and security of networked systems relying on libcsp for communication. In aerospace and satellite applications where libcsp is commonly deployed, successful exploitation could lead to complete system compromise, data exfiltration, or even physical damage to critical infrastructure. The remote exploitability aspect means that adversaries could potentially target systems from anywhere on the network, making this vulnerability particularly concerning for distributed space communication networks. The vulnerability affects systems where SFP packets are processed, which includes various space communication protocols and embedded network systems.
Mitigation strategies for CVE-2016-8597 should prioritize immediate patching of all affected libcsp library versions to the latest releases that contain fixed buffer handling mechanisms. Organizations should implement network segmentation and access controls to limit exposure of vulnerable systems to untrusted network traffic. Additional defensive measures include deploying network intrusion detection systems capable of identifying and blocking malformed SFP packets, implementing strict input validation at network boundaries, and conducting comprehensive security assessments of all systems utilizing libcsp libraries. This vulnerability aligns with CWE-121, which categorizes buffer overflow conditions, and represents a significant concern from an attack surface perspective as outlined in MITRE ATT&CK framework's execution and privilege escalation tactics. Regular security updates and vulnerability management processes should be implemented to prevent similar issues in future deployments of space communication protocols.