CVE-2023-39739 in Sweets&Bakery Line
Summary
by MITRE • 10/25/2023
The leakage of the client secret in REGINA SWEETS&BAKERY Line 13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.
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Analysis
by VulDB Data Team • 01/26/2026
The vulnerability identified as CVE-2023-39739 represents a critical security flaw in the REGINA SWEETS&BAKERY system version 13.6.1 where a client secret has been exposed, creating a significant vector for unauthorized access and malicious activity. This type of vulnerability falls under the category of credential exposure, which is classified as CWE-200 in the Common Weakness Enumeration framework, specifically addressing the disclosure of sensitive information. The exposure of client secrets typically occurs when authentication credentials are improperly stored, transmitted, or configured within applications, making them accessible to unauthorized parties through various attack vectors including code repositories, network traffic interception, or insecure configuration management.
The technical implementation of this vulnerability allows attackers to leverage the leaked client secret to obtain channel access tokens, which serve as the primary authentication mechanism for accessing the system's communication channels. This process typically involves using the compromised secret to authenticate against the system's OAuth or similar token generation endpoints, thereby acquiring valid access tokens that grant full privileges to interact with the messaging infrastructure. The operational impact of this exposure is particularly severe as it enables attackers to send crafted broadcast messages through the system, potentially reaching all connected users or channels within the network. This capability directly maps to the ATT&CK technique T1190 - Proxy Process, where attackers can use legitimate system access to perform malicious activities, and T1566 - Phishing, as the compromised credentials may have been obtained through social engineering or other initial access methods.
The consequences of this vulnerability extend beyond simple unauthorized access, as attackers can manipulate the communication flow to deliver malicious payloads, conduct spam campaigns, or even execute more sophisticated attacks through the compromised channel. The broadcast capability means that a single compromised secret can potentially affect multiple users or systems simultaneously, amplifying the impact of the initial breach. Organizations utilizing this system face significant risks including data exfiltration, service disruption, reputation damage, and potential regulatory compliance violations. The vulnerability demonstrates poor security practices in credential management and access control implementation, highlighting the importance of proper secret rotation, secure configuration management, and regular security assessments to identify and remediate such exposures before they can be exploited by malicious actors.
Effective mitigation strategies for CVE-2023-39739 require immediate action including the revocation of the compromised client secret and generation of new authentication credentials, followed by comprehensive system auditing to identify any unauthorized access or activities that may have occurred during the exposure period. Security teams should implement robust credential management practices including automated secret rotation, secure storage solutions using hardware security modules or secure vaults, and regular penetration testing to identify similar vulnerabilities. The incident also underscores the necessity of network monitoring and access control mechanisms to detect and prevent unauthorized access attempts, as well as implementing the principle of least privilege to minimize the potential impact of credential compromise. Organizations should also consider implementing additional security controls such as multi-factor authentication, rate limiting, and anomaly detection systems to provide defense-in-depth against similar vulnerabilities in their infrastructure.