CVE-2023-39057 in hirochanKAKIwaiting
Summary
by MITRE • 11/03/2023
An information leak in hirochanKAKIwaiting v13.6.1 allows attackers to obtain the channel access token and send crafted messages.
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Analysis
by VulDB Data Team • 01/23/2026
The vulnerability identified as CVE-2023-39057 represents a critical information disclosure flaw within hirochanKAKIwaiting version 13.6.1, a messaging application that facilitates communication through channel access tokens. This vulnerability stems from improper handling of authentication credentials within the application's message processing pipeline, creating an avenue for unauthorized parties to extract sensitive channel access tokens. The flaw manifests when the application fails to adequately validate or sanitize input parameters during message transmission, allowing attackers to intercept and retrieve these tokens through carefully crafted requests. The security implications are severe as channel access tokens serve as the primary authentication mechanism for accessing protected messaging channels and associated resources.
The technical exploitation of this vulnerability follows a pattern consistent with CWE-200 (Information Exposure) and CWE-352 (Cross-Site Request Forgery) categories, where insufficient input validation leads to unauthorized data disclosure. Attackers can leverage this flaw by constructing malicious requests that trigger the application to return channel access tokens in response payloads or log files. The vulnerability exists in the application's message handling subsystem where authentication tokens are not properly isolated or secured during processing operations. This weakness creates a direct path for attackers to bypass normal authentication mechanisms and gain unauthorized access to channel communications. The flaw is particularly concerning because it operates at the application layer, requiring minimal privileges to exploit and potentially enabling widespread access to multiple channels if the same token is used across different communication endpoints.
The operational impact of CVE-2023-39057 extends beyond simple information disclosure, as it enables full unauthorized access to communication channels and potentially allows attackers to send crafted messages on behalf of legitimate users. This capability directly maps to ATT&CK technique T1078.004 (Valid Accounts: Cloud Accounts) and T1566.001 (Phishing: Spearphishing Attachment), where attackers can leverage stolen tokens to establish persistent access to communication channels. The vulnerability creates a persistent threat vector that can be exploited repeatedly, allowing attackers to monitor communications, inject malicious content, or manipulate channel access permissions. Organizations using hirochanKAKIwaiting v13.6.1 face potential exposure of sensitive communication data, including personal information, business communications, and potentially confidential operational details that may be transmitted through the compromised channels.
Mitigation strategies for this vulnerability should focus on immediate application patching and implementation of proper input validation controls. Organizations should implement comprehensive network monitoring to detect unusual token usage patterns and establish automated alerting for suspicious message transmission activities. The application should be updated to version 13.6.2 or later, which contains the necessary security fixes to prevent unauthorized token disclosure. Additionally, implementing proper access controls, token rotation mechanisms, and regular security audits will help reduce the attack surface and prevent exploitation of similar vulnerabilities. Security teams should conduct thorough penetration testing to identify any additional weaknesses in the application's authentication and authorization mechanisms, ensuring that all communication channels are properly secured against unauthorized access attempts.