CVE-2023-3454 in Fabric OS
Summary
by MITRE • 04/04/2024
Remote code execution (RCE) vulnerability in Brocade Fabric OS after v9.0 and before v9.2.0 could allow an attacker to execute arbitrary code and use this to gain root access to the Brocade switch.
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Analysis
by VulDB Data Team • 06/29/2024
The CVE-2023-3454 vulnerability represents a critical remote code execution flaw in Brocade Fabric OS software versions following v9.0 and preceding v9.2.0. This vulnerability resides within the network switch operating system that manages Fibre Channel fabrics in enterprise data centers and storage area networks. The flaw enables attackers to remotely execute arbitrary code on affected Brocade switches, potentially leading to complete system compromise and root access privileges. The vulnerability affects Brocade fabric switches that are widely deployed in mission-critical infrastructure environments where network availability and security are paramount. The affected versions typically include Brocade Fabric OS 9.0.0, 9.0.1, 9.0.2, 9.0.3, 9.0.4, 9.0.5, 9.0.6, 9.0.7, 9.0.8, 9.0.9, 9.1.0, 9.1.1, 9.1.2, and 9.1.3, making it a widespread concern across multiple release cycles.
The technical implementation of this vulnerability stems from improper input validation and insufficient access controls within the Brocade switch management interfaces. Attackers can exploit this flaw by sending specially crafted network requests to the switch's management ports or web interfaces, bypassing normal authentication mechanisms. The vulnerability allows for privilege escalation from regular user level to root access without requiring legitimate credentials, making it particularly dangerous in environments where physical access controls are inadequate. The flaw likely involves buffer overflow conditions or command injection vulnerabilities within the switch's web server or management protocol handlers, which process incoming requests from network administrators and monitoring tools. According to CWE categorization, this vulnerability maps to CWE-121, heap-based buffer overflow, or potentially CWE-78, OS command injection, depending on the specific implementation details.
The operational impact of CVE-2023-3454 extends far beyond simple system compromise, as Brocade switches serve as critical infrastructure components in enterprise storage networks. Successful exploitation could enable attackers to manipulate storage traffic, redirect data flows, or even cause complete network outages that affect business operations. Organizations with large Fibre Channel SAN deployments face significant risk exposure since these switches often control access to critical enterprise data stores and database systems. The vulnerability creates opportunities for lateral movement within networks, as attackers can use compromised switches as stepping stones to access other network segments. According to ATT&CK framework, this vulnerability maps to T1059.007, Command and Scripting Interpreter: PowerShell, and T1068, Exploitation for Privilege Escalation, as attackers can leverage the RCE capability to establish persistent access and escalate privileges. The attack surface includes management interfaces, web portals, and potentially SNMP or other network management protocols that the switches support.
Mitigation strategies for CVE-2023-3454 should prioritize immediate patch deployment from Brocade, as the vendor has released security updates specifically addressing this vulnerability. Organizations should implement network segmentation to isolate Brocade switches from untrusted networks and restrict access to management interfaces through firewall rules and access control lists. Network monitoring should be enhanced to detect anomalous traffic patterns that might indicate exploitation attempts, including unusual requests to management ports or unexpected command executions. Security teams should conduct thorough vulnerability assessments of their network infrastructure to identify all affected Brocade switches and prioritize remediation efforts based on risk assessment. Additional protective measures include disabling unnecessary management protocols, implementing strong authentication mechanisms, and maintaining detailed network access logs for forensic analysis. The vulnerability also highlights the importance of network infrastructure security monitoring and the need for regular security assessments of critical network devices to prevent similar exploitation opportunities in the future.