CVE-2022-20722 in ISR800
Summary
by MITRE • 04/15/2022
Multiple vulnerabilities in the Cisco IOx application hosting environment on multiple Cisco platforms could allow an attacker to inject arbitrary commands into the underlying host operating system, execute arbitrary code on the underlying host operating system, install applications without being authenticated, or conduct a cross-site scripting (XSS) attack against a user of the affected software. For more information about these vulnerabilities, see the Details section of this advisory.
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Analysis
by VulDB Data Team • 04/20/2022
The vulnerability identified as CVE-2022-20722 represents a critical security flaw within the Cisco IOx application hosting environment that affects multiple Cisco platform families. This vulnerability stems from insufficient input validation and authentication mechanisms within the IOx framework, which is designed to enable edge computing applications on Cisco devices. The IOx environment serves as a containerized application hosting platform that allows third-party applications to run on Cisco networking equipment, creating a complex attack surface that extends beyond traditional network device boundaries. The affected platforms include various Cisco routers, switches, and unified computing systems that support the IOx application hosting capabilities, making this vulnerability particularly concerning due to the widespread deployment of these devices across enterprise and service provider networks.
The technical exploitation of this vulnerability occurs through multiple attack vectors that leverage weaknesses in the IOx application hosting environment's security controls. Attackers can manipulate input parameters within the IOx management interfaces to inject malicious commands that bypass authentication mechanisms and execute with elevated privileges on the underlying host operating system. This command injection vulnerability specifically targets the IOx application hosting environment's handling of user-supplied data, allowing unauthorized execution of arbitrary code on the host system. The flaw also enables unauthenticated application installation capabilities, where malicious actors can deploy applications without proper authorization, potentially establishing persistent backdoors or malicious services. Additionally, the vulnerability includes cross-site scripting elements that can be exploited through web-based management interfaces, allowing attackers to inject malicious scripts that can compromise user sessions and potentially escalate privileges within the IOx environment.
The operational impact of CVE-2022-20722 extends far beyond simple code execution, as it fundamentally undermines the security isolation properties that IOx applications are designed to maintain. Organizations utilizing Cisco IOx platforms face significant risks including complete system compromise, unauthorized data access, and potential lateral movement within their network infrastructure. The vulnerability's ability to execute arbitrary code on the underlying host operating system means that attackers can gain root-level access to the network devices, potentially enabling them to modify routing tables, intercept traffic, or establish persistent access points. The unauthenticated application installation capability creates additional attack vectors where malicious applications can be deployed to perform surveillance, data exfiltration, or network disruption activities. From a compliance perspective, this vulnerability can result in violations of security standards such as those defined in the NIST Cybersecurity Framework and ISO 27001, particularly concerning the principles of confidentiality, integrity, and availability.
Mitigation strategies for CVE-2022-20722 require immediate implementation of multiple security controls to address the various attack vectors present in the vulnerability. Organizations should prioritize applying the latest Cisco security patches and firmware updates that specifically address the IOx application hosting environment flaws. Network segmentation and access control measures should be implemented to limit exposure of IOx-enabled devices to untrusted networks, while also restricting administrative access to these devices through strong authentication mechanisms and privilege separation. The implementation of network monitoring and intrusion detection systems can help identify anomalous behavior patterns that may indicate exploitation attempts, particularly focusing on unusual command execution patterns or unauthorized application installations. Security teams should also conduct comprehensive vulnerability assessments of their IOx environments to identify any additional misconfigurations or insecure practices that could compound the risks associated with this vulnerability. From an operational standpoint, organizations should implement regular security audits of their IOx applications and monitor for unauthorized modifications to the application hosting environment, as this vulnerability could be leveraged to establish persistent access points within the network infrastructure. The mitigation approach should align with ATT&CK framework tactics including T1059 for command and script execution and T1078 for valid accounts, ensuring comprehensive coverage of the attack vectors present in this vulnerability.