CVE-2016-1520 in Wave App
Summary
by MITRE
The Grandstream Wave app 1.0.1.26 and earlier for Android does not use HTTPS when retrieving update information, which might allow man-in-the-middle attackers to execute arbitrary code via a crafted application.
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Analysis
by VulDB Data Team • 12/01/2022
The vulnerability identified as CVE-2016-1520 affects the Grandstream Wave mobile application version 1.0.1.26 and earlier running on Android devices. This security flaw resides in the application's update mechanism where it fails to implement secure communication protocols when fetching update information from remote servers. The absence of HTTPS encryption creates a critical pathway for malicious actors to intercept and manipulate the update process. The vulnerability stems from the application's reliance on unencrypted HTTP connections, which exposes the communication channel to various network-based attacks including man-in-the-middle operations. According to the Common Weakness Enumeration framework, this represents a weakness categorized under CWE-319 - Cleartext Transmission of Sensitive Information, which specifically addresses the transmission of sensitive data over networks without adequate encryption. The attack vector involves an adversary positioned within the network infrastructure who can observe, modify, or inject malicious content into the communication stream between the mobile application and its update servers. This weakness directly aligns with tactics described in the MITRE ATT&CK framework under T1071.004 - Application Layer Protocol: DNS, where attackers exploit weaknesses in application communication protocols to gain unauthorized access or execute malicious code.
The technical impact of this vulnerability extends beyond simple information disclosure to potentially enabling arbitrary code execution on affected devices. When the Grandstream Wave app attempts to retrieve update information, the lack of HTTPS protection means that any data transmitted between the application and remote servers can be intercepted and modified by attackers. This creates a scenario where malicious actors can inject crafted applications or update payloads that appear legitimate to the vulnerable application. The update process becomes a critical attack surface where adversaries can substitute legitimate update content with malicious payloads designed to compromise the device. The vulnerability's exploitation requires network access and the ability to position the attacker between the device and the update server, which is feasible in public Wi-Fi networks or compromised network infrastructures. The absence of certificate validation and encryption in the communication channel removes the integrity and confidentiality protections that would normally prevent such attacks. This weakness is particularly dangerous because it operates at the application level rather than requiring device-level compromise, making it accessible to attackers with relatively basic network monitoring capabilities.
The operational impact of CVE-2016-1520 affects not only individual users but also organizations that deploy Grandstream Wave applications in enterprise environments. Mobile devices running vulnerable versions become potential entry points for attackers seeking to establish persistent access or deploy additional malware. The vulnerability undermines the security of the entire update ecosystem, as it allows attackers to subvert the application's intended security measures. Organizations using these applications may experience unauthorized access to their mobile devices, data breaches, or potential compromise of network infrastructure through infected endpoints. The attack scenario becomes increasingly dangerous when considering that the update mechanism is typically designed to be trusted by the application, making it an ideal vector for privilege escalation or persistent backdoor installation. The vulnerability's exploitation can result in complete device compromise, data exfiltration, and potentially lateral movement within corporate networks if the affected devices have access to internal resources. This makes the vulnerability particularly concerning for organizations that rely on mobile applications for critical business operations or sensitive data handling.
Mitigation strategies for CVE-2016-1520 should prioritize immediate application updates to versions that implement proper HTTPS encryption and certificate validation. Organizations should enforce network security policies that include monitoring for unusual traffic patterns and implement network segmentation to limit potential attack surfaces. Mobile device management solutions should be configured to prevent installation of vulnerable applications and ensure automatic security updates are enabled. Network administrators should deploy intrusion detection systems that can identify and alert on suspicious communication patterns that may indicate exploitation attempts. The implementation of certificate pinning mechanisms within the application would provide additional protection against man-in-the-middle attacks by validating specific server certificates rather than relying on standard certificate authorities. Security teams should also consider implementing network access control policies that restrict mobile device communication to known secure endpoints and regularly audit application configurations to ensure proper encryption protocols are in place. Organizations should develop incident response procedures specifically addressing mobile application vulnerabilities and establish communication protocols for notifying users about security updates and potential risks. The vulnerability demonstrates the critical importance of secure communication protocols in mobile applications and highlights the need for comprehensive security testing throughout the application development lifecycle to prevent similar weaknesses from being introduced in future versions.