CVE-2014-7559 in InstaTalks
Summary
by MITRE
The InstaTalks (aka com.natrobit.instatalks) application 1.3.1 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
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Analysis
by VulDB Data Team • 10/11/2024
The vulnerability identified as CVE-2014-7559 affects the InstaTalks Android application version 1.3.1, presenting a critical security flaw in the application's cryptographic implementation. This weakness stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack surface that enables malicious actors to execute successful man-in-the-middle attacks against unsuspecting users. The vulnerability directly impacts the application's ability to establish secure communications with backend servers, fundamentally undermining the integrity of the encrypted data transmission process. According to CWE-295, this represents a specific weakness in certificate validation mechanisms where the application fails to properly verify the authenticity and trustworthiness of SSL certificates presented by remote servers.
The technical flaw manifests when the application establishes secure connections to remote servers without performing proper certificate chain validation or hostname verification. This allows attackers to intercept communications by presenting forged certificates that appear legitimate to the vulnerable application. The attack vector specifically exploits the absence of certificate pinning or proper trust store validation, enabling adversaries to create malicious certificates that can be accepted by the application. The vulnerability falls under the ATT&CK technique T1573.002 for "Encrypted Channels" and T1041 for "Exfiltration Over C2 Channel," as it creates a pathway for data interception and potential exfiltration. The lack of certificate verification creates a trust relationship that can be easily compromised, allowing attackers to establish false connections that appear legitimate to the application's security model.
The operational impact of this vulnerability extends beyond simple data interception, as it provides attackers with the capability to manipulate communications and potentially access sensitive user information. Users of the InstaTalks application become vulnerable to various attack scenarios including credential theft, session hijacking, and unauthorized access to personal data that may be transmitted through the application. The vulnerability particularly affects users who rely on the application for sensitive communications, as the lack of certificate verification means that any data transmitted could be intercepted and modified by malicious actors. The attack requires minimal technical expertise to exploit, making it particularly dangerous as it can be leveraged by threat actors with varying skill levels. This weakness directly violates the principle of secure communication and undermines the fundamental security assumptions that users expect from mobile applications handling sensitive information.
Mitigation strategies for this vulnerability must address the core certificate validation issue by implementing proper SSL/TLS certificate verification mechanisms. The application should be updated to perform comprehensive certificate chain validation, including hostname verification and trust store validation against known certificate authorities. Implementing certificate pinning techniques would provide additional protection by ensuring that only specific certificates or certificate authorities are accepted for connections. Security patches should include proper error handling for certificate validation failures and ensure that connections are terminated when certificate verification fails. Organizations should also consider implementing network-level monitoring to detect potential man-in-the-middle attacks and establish proper security testing procedures including penetration testing and secure coding reviews. The remediation process should align with industry standards such as NIST SP 800-52 for certificate management and OWASP Mobile Top 10 for mobile application security requirements. Additionally, the application should be updated to use current TLS protocols and cipher suites that provide stronger cryptographic security guarantees.