CVE-2019-6832 in spaceLYnk
Summary
by MITRE
A CWE-287: Authentication vulnerability exists in spaceLYnk (all versions before 2.4.0) and Wiser for KNX (all versions before 2.4.0 - formerly known as homeLYnk), which could cause loss of control when an attacker bypasses the authentication.
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Analysis
by VulDB Data Team • 08/28/2020
The vulnerability identified as CVE-2019-6832 represents a critical authentication flaw classified under CWE-287, affecting spaceLYnk and Wiser for KNX software platforms. These industrial IoT systems operate within smart building environments and home automation ecosystems, where unauthorized access could lead to significant security breaches and operational disruptions. The vulnerability specifically impacts all versions prior to 2.4.0, indicating that the manufacturers released a patched version to address this weakness in their authentication mechanisms.
The technical flaw manifests as an authentication bypass vulnerability that allows attackers to gain unauthorized access to the affected systems without proper credentials. This weakness in the authentication process creates a pathway for malicious actors to assume control over connected devices and systems, potentially enabling them to manipulate building automation functions, access sensitive environmental controls, or disrupt normal operational procedures. The vulnerability's classification as CWE-287 indicates that the system fails to properly verify user identities or implements weak authentication mechanisms that can be circumvented through various attack vectors.
From an operational standpoint, the impact of this vulnerability extends beyond simple unauthorized access, as it could result in complete loss of control over automated building systems. In smart building environments, this could translate to unauthorized modification of heating, ventilation, air conditioning settings, lighting controls, or security system configurations. The potential for physical security compromise increases significantly when attackers can manipulate access control systems or environmental controls that may affect building safety protocols. Organizations using these platforms face risks of operational disruption, data compromise, and potential physical safety hazards.
The mitigation strategy for this vulnerability requires immediate deployment of the patched versions 2.4.0 and later for both spaceLYnk and Wiser for KNX platforms. System administrators should conduct comprehensive vulnerability assessments to identify all affected devices and ensure proper patch management protocols are implemented. Additional security measures include implementing network segmentation to isolate these systems from critical infrastructure, enforcing strong authentication mechanisms, and monitoring for suspicious access patterns. Organizations should also consider implementing network intrusion detection systems to identify potential exploitation attempts and establish incident response procedures specifically tailored to address authentication bypass scenarios. This vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation, as the authentication bypass allows attackers to operate with legitimate system credentials.