CVE-2023-6068 in MOS
Summary
by MITRE • 03/04/2024
On affected 7130 Series FPGA platforms running MOS and recent versions of the MultiAccess FPGA, application of ACL’s may result in incorrect operation of the configured ACL for a port resulting in some packets that should be denied being permitted and some
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Analysis
by VulDB Data Team • 12/18/2025
The vulnerability identified as CVE-2023-6068 affects the 7130 Series FPGA platforms operating with MOS and recent MultiAccess FPGA versions, representing a significant security flaw in network access control implementation. This issue manifests when Access Control Lists are applied to network ports, creating a scenario where the configured ACLs fail to operate correctly. The flaw constitutes a direct violation of the principle of least privilege and network segmentation, as the system cannot properly enforce the intended packet filtering policies. This vulnerability falls under the category of configuration error and access control bypass, with implications that extend beyond simple network misconfiguration to potentially compromise the entire network security posture of affected systems.
The technical root cause of this vulnerability lies in the improper handling of ACL configuration within the FPGA's packet processing pipeline. When ACL rules are applied to specific ports, the system fails to correctly interpret or enforce the intended filtering behavior, resulting in a false positive scenario where packets that should be denied are permitted to pass through the network. This misconfiguration affects the fundamental packet filtering mechanisms that are critical for network security, particularly in enterprise environments where strict access controls are required. The vulnerability demonstrates a clear breakdown in the validation and enforcement processes that should ensure ACL configurations are properly implemented and maintained.
The operational impact of CVE-2023-6068 extends far beyond a simple network connectivity issue, as it creates potential entry points for malicious actors seeking to exploit the inconsistent packet filtering behavior. Network administrators may unknowingly allow unauthorized traffic to traverse their networks while simultaneously blocking legitimate traffic that should be permitted, creating a false sense of security. This vulnerability directly impacts the integrity of network access controls and can lead to data exfiltration, lateral movement, and other malicious activities within the compromised network environment. The issue is particularly concerning in environments where network segmentation is critical for compliance with security standards such as those outlined in the NIST Cybersecurity Framework and ISO/IEC 27001.
Mitigation strategies for this vulnerability should include immediate firmware updates from the vendor to address the ACL processing flaw, along with comprehensive network monitoring to detect any anomalous traffic patterns that might indicate exploitation attempts. Network administrators should implement additional layers of security controls, including regular ACL audits and validation procedures, to ensure that access policies are functioning as intended. The vulnerability aligns with ATT&CK technique T1071.004 for application layer protocol and CWE-284 for improper access control, emphasizing the need for robust access control mechanisms and proper configuration management. Organizations should also consider implementing network traffic analysis tools that can detect unusual packet flow patterns that might indicate the exploitation of this vulnerability, as the affected systems may not immediately alert administrators to the misconfigured ACL behavior.