CVE-2020-26072 in IoT Field Network Director
Summary
by MITRE • 11/18/2020
A vulnerability in the SOAP API of Cisco IoT Field Network Director (FND) could allow an authenticated, remote attacker to access and modify information on devices that belong to a different domain. The vulnerability is due to insufficient authorization in the SOAP API. An attacker could exploit this vulnerability by sending SOAP API requests to affected devices for devices that are outside their authorized domain. A successful exploit could allow the attacker to access and modify information on devices that belong to a different domain.
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Analysis
by VulDB Data Team • 12/08/2020
The vulnerability identified as CVE-2020-26072 represents a critical authorization flaw within the SOAP API implementation of Cisco IoT Field Network Director FND. This weakness stems from inadequate access control mechanisms that fail to properly validate domain boundaries when processing API requests. The affected system operates within industrial internet of things environments where network directors manage device communications and configurations across multiple domains or segments. The vulnerability specifically impacts the SOAP-based web services that enable remote management and monitoring capabilities for connected IoT devices.
The technical flaw manifests through insufficient input validation and authorization checks within the SOAP API endpoints. When authenticated users submit requests to the API, the system fails to properly verify whether the requested operations fall within the user's authorized domain scope. This authorization bypass allows an attacker to craft malicious SOAP requests that target devices belonging to other domains within the same FND management infrastructure. The vulnerability essentially permits cross-domain data access and modification, creating a significant security boundary violation that undermines the fundamental security model of domain isolation.
Operational impact of this vulnerability extends beyond simple data exposure to encompass full manipulation of IoT device configurations and operational parameters. An attacker exploiting this vulnerability could potentially alter device settings, modify network configurations, access sensitive operational data, or even disrupt device functionality across different administrative domains. The implications are particularly severe in industrial environments where FND systems manage critical infrastructure components, as unauthorized access to one domain could cascade into unauthorized control of devices in adjacent domains. This cross-domain access capability violates fundamental security principles and could enable attackers to escalate privileges or conduct targeted attacks against specific device populations.
Mitigation strategies should focus on implementing robust authorization controls within the SOAP API framework. Organizations should enforce strict domain boundary checks at the API level, ensuring that all requests are validated against user permissions and domain memberships before processing. Network segmentation and access control lists should be implemented to prevent unauthorized cross-domain communication between FND management components. Regular security assessments and code reviews should be conducted to identify similar authorization gaps in other API endpoints. The vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems, and corresponds to techniques described in the ATT&CK framework under privilege escalation and lateral movement tactics. Cisco has released patches addressing this vulnerability, and organizations should prioritize immediate deployment of these updates to protect their IoT infrastructure from potential exploitation.