CVE-2022-22282 in SMA1000
Summary
by MITRE • 05/14/2022
SonicWall SMA1000 series firmware 12.4.0, 12.4.1-02965 and earlier versions incorrectly restricts access to a resource using HTTP connections from an unauthorized actor leading to Improper Access Control vulnerability.
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Analysis
by VulDB Data Team • 05/18/2022
The SonicWall SMA1000 series represents a critical appliance in enterprise network security infrastructure, serving as a secure access gateway that manages remote connectivity for organizations. This device operates as a Software Defined Wide Area Network (SD-WAN) solution that enables secure remote access to corporate networks through SSL VPN capabilities. The firmware versions 12.4.0 through 12.4.1-02965 contain a significant security flaw that directly impacts the device's ability to properly authenticate and authorize network connections. The vulnerability manifests in the HTTP connection handling mechanism where the system fails to adequately validate access requests, creating an improper access control scenario that allows unauthorized actors to exploit the system's resource access controls.
This vulnerability stems from a fundamental flaw in the firmware's access control implementation where HTTP connections are not properly restricted based on authentication status or authorization levels. The improper access control vulnerability (cwe-285) affects how the SMA1000 series processes incoming HTTP requests and determines whether to grant access to protected resources within the system. When unauthorized actors establish HTTP connections to the device, they can potentially bypass the normal authentication and authorization mechanisms that should prevent access to sensitive system functions. The flaw exists at the protocol level where HTTP traffic is processed without sufficient validation checks, allowing malicious users to access system resources that should be restricted to authenticated administrators or authorized users only.
The operational impact of this vulnerability is severe and can compromise the entire security posture of organizations relying on the affected SonicWall SMA1000 series devices. Attackers who exploit this vulnerability can gain unauthorized access to the device's administrative interfaces, potentially leading to complete system compromise and unauthorized network access. The affected resources include system configuration data, user credentials, network access controls, and other sensitive operational parameters that could enable further attacks within the corporate network. This vulnerability directly violates the principle of least privilege and can be exploited to escalate privileges, modify system settings, or establish persistent access points within the organization's network infrastructure. The attack surface extends beyond simple unauthorized access to include potential data exfiltration and network disruption capabilities.
Organizations should immediately implement mitigations including firmware updates to versions that address the access control flaw, network segmentation to limit direct access to the SMA1000 series devices, and enhanced monitoring of HTTP connections to detect anomalous access patterns. The vulnerability aligns with attack techniques documented in the attack tree framework where unauthorized access to network infrastructure devices can lead to broader compromise. Security teams should consider implementing additional access controls such as firewall rules that restrict HTTP access to the device only from trusted administrative networks. The mitigation strategy should also include regular security audits of the device configuration and monitoring for unauthorized access attempts. Organizations should also consider deploying intrusion detection systems that can identify and alert on suspicious HTTP traffic patterns that may indicate exploitation attempts against the vulnerable firmware versions.