CVE-2018-1677 in DataPower Gateways
Summary
by MITRE
IBM DataPower Gateways 7.1, 7.2, 7.5, 7.5.1, 7.5.2, 7.6, and 7.7 and IBM MQ Appliance are vulnerable to a denial of service, caused by the improper handling of full file system. A local attacker could exploit this vulnerability to cause a denial of service. IBM X-Force ID: 145171.
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Analysis
by VulDB Data Team • 06/20/2023
The vulnerability identified as CVE-2018-1677 affects IBM DataPower Gateways across multiple versions including 7.1, 7.2, 7.5, 7.5.1, 7.5.2, 7.6, and 7.7, as well as IBM MQ Appliance systems. This weakness represents a critical denial of service vulnerability that stems from improper handling of full file system conditions within the affected platforms. The vulnerability specifically manifests when the system encounters a situation where the file system reaches capacity, leading to unexpected behavior that can result in complete system unavailability. The flaw is particularly concerning because it allows local attackers to exploit the condition and trigger a denial of service state, effectively rendering the gateway or appliance inoperable and disrupting critical network services that depend on these systems for secure data processing and routing.
From a technical perspective, this vulnerability operates through a specific mechanism involving file system resource management where the system fails to properly handle scenarios when storage capacity is exhausted. The improper handling typically involves inadequate error checking and recovery procedures when file system operations encounter full disk conditions. When the file system reaches capacity, the affected IBM DataPower and MQ Appliance systems do not gracefully manage this condition, instead allowing the system to enter a state where normal operations cease functioning. This behavior is classified under CWE-400, which specifically addresses "Uncontrolled Resource Consumption" and represents a common pattern in systems where resource management logic fails to account for edge cases such as complete resource exhaustion. The vulnerability demonstrates poor defensive programming practices where the system does not implement proper safeguards against resource depletion scenarios, leading to system instability and complete service disruption.
The operational impact of this vulnerability extends beyond simple service interruption to potentially compromise entire network infrastructures that rely on IBM DataPower gateways for security services, API management, and message routing. Organizations using these appliances may experience significant downtime during exploitation attempts, with the severity of impact directly correlating to the criticality of services dependent on these systems. The local attacker access requirement reduces the complexity of exploitation, making the vulnerability more accessible to insiders or compromised internal systems. This makes the vulnerability particularly dangerous in environments where privileged access is not adequately controlled or monitored. The disruption can affect not only the specific appliance but also downstream systems that depend on its services, creating cascading failures throughout the network infrastructure. From an ATT&CK framework perspective, this vulnerability maps to T1499.004, which covers "Unauthorized Use of System Resources" and represents a specific technique for achieving denial of service through resource exhaustion.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected systems with the vendor-provided security updates. Organizations must implement comprehensive monitoring of file system usage on all DataPower and MQ Appliance systems to proactively identify and address storage capacity issues before they reach critical levels. System administrators should establish automated alerts for file system usage thresholds to prevent conditions that could lead to exploitation. Additionally, implementing proper resource management policies including regular log file rotation, implementing storage quotas, and configuring automatic cleanup procedures can help prevent the conditions that trigger this vulnerability. Network segmentation and access control measures should be strengthened to limit local access to these critical systems, reducing the attack surface for potential exploitation. Organizations should also conduct regular vulnerability assessments and penetration testing to identify similar resource management weaknesses in their broader infrastructure, ensuring that all systems maintain proper defensive measures against resource exhaustion attacks. The vulnerability highlights the importance of robust error handling and resource management in enterprise security appliances where system stability directly impacts organizational security posture and operational continuity.