CVE-2024-44097 in Android
Summary
by MITRE • 10/02/2024
According to the researcher: "The TLS connections are encrypted against tampering or eavesdropping. However, the application does not validate the server certificate properly while initializing the TLS connection. This allows for a network attacker to intercept the connection and read the data. The attacker could the either send the client a malicious response, or forward the (possibly modified) data to the real server."
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Analysis
by VulDB Data Team • 10/05/2024
This vulnerability represents a critical failure in the Transport Layer Security implementation where the application establishes encrypted connections but neglects to properly validate server certificates during the initial TLS handshake process. The flaw allows for man-in-the-middle attacks where network adversaries can intercept communications between clients and servers without detection. The vulnerability specifically affects the certificate validation mechanism that should verify the authenticity and integrity of the server's identity before establishing a secure connection.
The technical nature of this vulnerability aligns with CWE-295 which addresses improper certificate validation in secure communications. When applications fail to validate certificates properly, they create opportunities for attackers to substitute their own certificates during the handshake process. This weakness enables attackers to establish seemingly legitimate connections while simultaneously acting as intermediaries in the communication channel. The vulnerability exists at the TLS initialization phase where the application should enforce certificate chain validation, hostname matching, and trust verification before permitting data transmission.
The operational impact of this vulnerability is severe as it fundamentally undermines the security assurances provided by TLS encryption. Network attackers can exploit this weakness to perform active interception attacks where they either send malicious responses directly to clients or forward modified data to legitimate servers while maintaining their own position as communication intermediaries. This creates a persistent threat vector that can be leveraged for data exfiltration, injection of malicious content, or complete disruption of communication integrity. The vulnerability essentially transforms what should be a secure encrypted channel into a potentially compromised conduit for unauthorized access.
Organizations should implement immediate mitigations including enforcing strict certificate validation procedures during TLS initialization, implementing certificate pinning mechanisms where appropriate, and deploying network monitoring solutions to detect anomalous certificate behavior. The remediation strategy must address the root cause by ensuring that all TLS connections require proper certificate validation before data transmission occurs. Additionally, security teams should conduct comprehensive assessments of all applications utilizing TLS to identify similar validation gaps and implement proper certificate trust management policies. This vulnerability demonstrates the critical importance of maintaining certificate validation as a fundamental security control within cryptographic implementations.