CVE-2023-47372 in Line
Summary
by MITRE • 11/09/2023
The leakage of channel access token in UPDATESALON C-LOUNGE Line 13.6.1 allows remote attackers to send malicious notifications to victims.
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Analysis
by VulDB Data Team • 02/23/2026
The vulnerability described in CVE-2023-47372 represents a critical security flaw in the UPDATESALON C-LOUNGE Line 13.6.1 system where channel access tokens are improperly exposed or leaked. This represents a significant weakness in the system's authentication and authorization mechanisms, as channel access tokens are typically sensitive credentials used to authenticate and authorize access to messaging services and notification systems. The improper handling of these tokens creates an opportunity for attackers to gain unauthorized access to the system's notification capabilities and potentially compromise the integrity of communications between the service and its users.
The technical implementation of this vulnerability stems from inadequate token management practices within the UPDATESALON C-LOUNGE Line system. Channel access tokens are typically designed to be ephemeral credentials that should be tightly controlled and secured during transmission and storage. When these tokens are leaked, they can be harvested by malicious actors through various means such as network traffic interception, insecure code practices, or improper logging mechanisms. The vulnerability likely occurs during the application's communication with Line messaging services where the access token is transmitted or stored without proper security controls, creating a persistent exposure that attackers can exploit.
From an operational perspective, this vulnerability enables remote attackers to send malicious notifications to victims, which constitutes a severe security risk that can lead to various attack vectors including phishing campaigns, spam distribution, social engineering attacks, and potential service abuse. The ability to send unauthorized notifications can result in reputational damage to the organization, user trust erosion, and potential regulatory compliance violations. Attackers could leverage this capability to distribute malware, conduct fraud, or manipulate user behavior through deceptive messaging, making this vulnerability particularly dangerous in environments where user trust and security are paramount. The impact extends beyond simple notification abuse as it represents a fundamental breach in the system's access control mechanisms.
The vulnerability aligns with CWE-200 (Information Exposure) and CWE-312 (Cleartext Storage of Sensitive Information) categories, indicating that sensitive data is being exposed inappropriately during system operations. From an ATT&CK framework perspective, this vulnerability maps to T1566 (Phishing) and T1071.004 (Application Layer Protocol: DNS) as attackers can leverage the compromised notification capabilities for malicious communication. The exposure of channel access tokens also relates to T1528 (Steal Application Access Token) and T1046 (Network Service Scanning) as attackers may attempt to identify and exploit additional vulnerabilities within the system. Organizations should implement comprehensive monitoring and detection capabilities to identify unauthorized use of notification services and establish proper token lifecycle management practices.
Mitigation strategies should include immediate implementation of secure token handling practices, including the use of encrypted storage mechanisms, proper access controls, and regular token rotation procedures. The system should be configured to use secure communication protocols such as TLS 1.3 for all transmissions involving sensitive credentials. Organizations should implement network segmentation and monitoring to detect unusual notification patterns or unauthorized access attempts. Regular security assessments should be conducted to identify potential exposure points in the system architecture. The implementation of principle of least privilege access controls and proper input validation can help prevent unauthorized token usage. Additionally, organizations should establish incident response procedures specifically designed to address credential exposure incidents and notification abuse scenarios to ensure rapid response and remediation when such vulnerabilities are detected.