CVE-2022-23158 in Wyse Device Agent
Summary
by MITRE • 04/02/2022
Wyse Device Agent version 14.6.1.4 and below contain a sensitive data exposure vulnerability. A local authenticated user with standard privilege could potentially exploit this vulnerability and provide incorrect port information and get connected to valid WMS server
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Analysis
by VulDB Data Team • 04/05/2022
The vulnerability identified as CVE-2022-23158 affects Wyse Device Agent versions 14.6.1.4 and earlier, representing a sensitive data exposure flaw that compromises the integrity of device communication protocols. This vulnerability resides within the authentication and connection handling mechanisms of the device agent software, creating a potential attack vector for local users who possess standard privileges. The flaw specifically manifests when the agent processes port information during connection establishment to WMS servers, allowing for manipulation of connection parameters that could lead to unauthorized access or data interception. The vulnerability demonstrates characteristics consistent with CWE-200, which addresses exposure of sensitive information, and falls under the broader category of credential exposure issues that affect device management systems.
The technical implementation of this vulnerability stems from insufficient validation and sanitization of port information within the Wyse Device Agent's connection logic. When a local authenticated user executes the affected software, they can manipulate the port specification parameters to redirect connection attempts to alternative WMS servers or alter the connection behavior in ways that compromise the intended security posture. This manipulation occurs during the agent's initialization phase when it attempts to establish communication with the WMS server, providing an opportunity for privilege escalation or man-in-the-middle attacks. The flaw essentially allows for improper input handling that bypasses normal connection validation procedures, creating a pathway for unauthorized network access that violates standard security protocols.
The operational impact of this vulnerability extends beyond simple data exposure, as it enables potential attackers to establish connections to valid WMS servers using modified port information, effectively creating a means for unauthorized access to enterprise network resources. Local users with standard privileges can exploit this weakness to gain access to systems that would normally require elevated permissions or specific authentication credentials. This vulnerability significantly undermines the security controls implemented by device management systems, particularly in environments where Wyse devices are used for remote management or kiosk deployments. The exposure creates opportunities for attackers to intercept sensitive communications, potentially gaining access to enterprise data or using the compromised device as a pivot point for further network exploration, aligning with tactics described in the ATT&CK framework under initial access and privilege escalation domains.
Mitigation strategies for CVE-2022-23158 should prioritize immediate patching of affected Wyse Device Agent versions to the latest releases that contain fixed implementations of connection validation and port handling mechanisms. Organizations should implement network segmentation and monitoring to detect unusual connection patterns or unauthorized attempts to redirect WMS server communications. Additional controls include enforcing strict access controls on device management interfaces, implementing network access controls to limit WMS server connectivity, and conducting regular vulnerability assessments of device management systems. The remediation process should also include reviewing and updating device configuration policies to ensure that port information is properly validated and that connection attempts are logged and monitored for suspicious activity. Security teams should consider implementing network-based intrusion detection systems that can identify anomalous connection patterns consistent with this vulnerability's exploitation characteristics.