CVE-2023-45561 in OIRASE BEER_waiting Line
Summary
by MITRE • 01/02/2024
An issue in A-WORLD OIRASE BEER_waiting Line v.13.6.1 allows attackers to send crafted notifications via leakage of the channel access token.
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Analysis
by VulDB Data Team • 06/14/2025
The vulnerability identified as CVE-2023-45561 affects the A-WORLD OIRASE BEER_waiting Line application version 13.6.1, representing a critical security flaw that enables unauthorized attackers to exploit channel access token leakage for sending malicious notifications. This issue stems from improper handling of authentication tokens within the application's notification delivery mechanism, creating a significant attack surface that could be leveraged for various malicious activities. The vulnerability specifically targets the LINE messaging platform integration where the application utilizes channel access tokens to authenticate and send notifications to users.
The technical flaw manifests through a lack of proper input validation and token management within the notification processing pipeline. When the application receives or generates notifications, it fails to adequately secure or sanitize the channel access token, resulting in potential exposure to unauthorized parties. This weakness creates a path for attackers to intercept or extract these tokens through various means including network sniffing, code inspection, or by exploiting other vulnerabilities in the application's architecture. The channel access token serves as a critical authentication mechanism that, when compromised, grants attackers the ability to impersonate the application and send arbitrary notifications to users.
The operational impact of this vulnerability extends beyond simple notification spoofing, potentially enabling sophisticated attack vectors including social engineering campaigns, phishing attempts, and malicious content distribution. Attackers could leverage the compromised tokens to send notifications that appear legitimate to end users, thereby undermining trust in the application and potentially leading to credential theft or other malicious activities. This vulnerability directly impacts the principle of least privilege and authentication integrity, as it allows unauthorized parties to bypass normal access controls and send notifications through the legitimate application channel. The exploitation of this flaw could result in significant reputational damage to the organization and potential regulatory compliance violations.
Security mitigations for this vulnerability should focus on implementing robust token management practices including secure storage mechanisms, proper token rotation schedules, and comprehensive input validation. Organizations should implement the principle of least privilege by ensuring tokens have minimal required permissions and are rotated regularly. The application architecture should be redesigned to prevent direct exposure of channel access tokens to potentially malicious code paths, utilizing secure token handling libraries and proper API design patterns. Additionally, network monitoring should be enhanced to detect unusual notification patterns that might indicate token compromise or unauthorized usage. This vulnerability aligns with CWE-284 (Improper Access Control) and CWE-312 (Cleartext Storage of Sensitive Data) classifications, and represents a potential technique for maintaining persistence and lateral movement through the ATT&CK framework under the T1078 (Valid Accounts) and T1566 (Phishing) tactics. Organizations should also implement proper security testing including penetration testing and code reviews to identify similar token leakage vulnerabilities in their systems.