CVE-2023-36483 in MASmobile Classic App
Summary
by MITRE • 03/16/2024
Authorization bypass can be achieved by session ID prediction in MASmobile Classic Android version 1.16.18 and earlier and
MASmobile Classic iOS version 1.7.24 and earlier
which allows remote attackers to retrieve sensitive data including customer data, security system status, and event history.
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Analysis
by VulDB Data Team • 02/18/2026
The vulnerability identified as CVE-2023-36483 represents a critical authorization bypass flaw affecting MASmobile Classic mobile applications across both Android and iOS platforms. This security weakness stems from insufficient randomness in session identifier generation, creating predictable session tokens that malicious actors can exploit to gain unauthorized access to protected resources. The affected versions include MASmobile Classic Android 1.16.18 and earlier releases, alongside iOS versions 1.7.24 and earlier, indicating a widespread impact across the mobile application ecosystem. The vulnerability specifically targets the session management mechanism, which serves as the primary control for maintaining user authentication state and access permissions within the mobile application environment.
The technical implementation of this vulnerability manifests through predictable session ID generation algorithms that fail to incorporate sufficient entropy or cryptographic randomness. This weakness allows remote attackers to generate valid session tokens through pattern recognition or brute force techniques, effectively circumventing the application's authentication mechanisms. The flaw operates at the application layer where session management is handled, creating a direct path for unauthorized access to sensitive data repositories. Security researchers have identified that the session ID generation algorithm employs insufficient randomness sources, making it susceptible to prediction attacks that fall under the category of weak cryptographic randomness as defined by CWE-330. The vulnerability's impact extends beyond simple unauthorized access, as attackers can retrieve comprehensive customer data including personal information, security system status updates, and detailed event history records that would normally be restricted to authorized personnel only.
The operational consequences of this vulnerability present significant risks to organizations utilizing MASmobile Classic solutions for security management and monitoring operations. Attackers exploiting this weakness can potentially access sensitive operational data that includes real-time security system status information, historical event logs, and customer-related data that may contain personally identifiable information or proprietary business details. The remote nature of the attack means that threat actors can exploit this vulnerability without requiring physical access to devices or network infrastructure, making the attack surface particularly broad. This authorization bypass allows for persistent access to systems and data that should remain protected, potentially enabling further exploitation or lateral movement within network environments. The vulnerability directly impacts the confidentiality and integrity of information systems as outlined in the CIA triad, while also potentially affecting availability through data manipulation or exfiltration activities. Organizations relying on MASmobile Classic for security operations may face regulatory compliance violations and significant reputational damage if customer data is compromised through this vulnerability.
Mitigation strategies for CVE-2023-36483 require immediate attention through comprehensive patch management and application updates. Organizations should prioritize updating to the latest versions of MASmobile Classic that address the session ID prediction vulnerability, ensuring that cryptographic randomness is properly implemented in session token generation. The fix should incorporate robust random number generation algorithms that meet industry standards such as those specified in NIST SP 800-90A for cryptographic strength randomness. Network segmentation and additional access controls should be implemented as temporary compensating measures while updates are deployed. Security teams should conduct thorough vulnerability assessments to identify any potential exploitation that may have occurred prior to patch deployment. Regular monitoring of application logs for suspicious session activity and implementing intrusion detection systems can help identify exploitation attempts. The vulnerability's classification under CWE-330 emphasizes the need for proper entropy sources in cryptographic implementations, while its exploitation patterns align with ATT&CK technique T1566 for credential access through session hijacking. Organizations should also consider implementing additional authentication layers such as multi-factor authentication to provide defense-in-depth against similar session management vulnerabilities.