CVE-2024-21374 in Teams
Summary
by MITRE • 02/13/2024
Microsoft Teams for Android Information Disclosure
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Analysis
by VulDB Data Team • 03/04/2024
Microsoft Teams for Android information disclosure vulnerabilities represent significant security concerns that can lead to unauthorized access to sensitive communication data and user credentials. These flaws typically arise from improper handling of sensitive information within the mobile application's memory management and data storage mechanisms, potentially exposing confidential business communications, personal identification details, and authentication tokens to malicious actors.
The technical implementation of these vulnerabilities often stems from inadequate input validation and insufficient secure coding practices within the Android application framework. Attackers can exploit these weaknesses through various vectors including memory dumps, file system access, or network interception techniques that allow them to extract cached data, session information, or stored credentials without proper authorization. The vulnerability may manifest as improper encryption of local storage, insecure data transmission protocols, or failure to properly clear sensitive information from memory after use.
The operational impact of such information disclosure vulnerabilities extends beyond simple data exposure to encompass potential business disruption, regulatory compliance violations, and reputational damage. Organizations relying on Microsoft Teams for Android may experience unauthorized access to confidential corporate communications, intellectual property theft, or credential compromise that could enable further attacks within their network infrastructure. The mobile nature of the platform increases the attack surface significantly since users may access the application from various unsecured environments including public networks, personal devices, or compromised corporate equipment.
Mitigation strategies should focus on implementing comprehensive secure coding practices and robust data protection mechanisms within the mobile application architecture. Organizations must ensure proper encryption of all sensitive data both at rest and in transit, implement secure memory management practices to prevent information leakage, and establish regular security testing procedures including static and dynamic code analysis. The implementation of proper access controls, secure session management, and regular vulnerability assessments can significantly reduce the risk of exploitation. Additionally, organizations should consider deploying mobile device management solutions that enforce security policies and monitor for suspicious activities within their Teams environments.
These vulnerabilities align with common weakness enumerations such as CWE-200 Information Exposure and CWE-312 Cleartext Storage of Sensitive Information, while also mapping to ATT&CK techniques including T1566 Credential Access and T1071 Application Layer Protocol for data exfiltration activities. The threat landscape demonstrates that mobile application security remains a critical concern as attackers increasingly target endpoint devices to gain access to organizational networks through seemingly less secure mobile platforms.