CVE-2016-2060 in Android
Summary
by MITRE
server/TetherController.cpp in the tethering controller in netd, as distributed with Qualcomm Innovation Center (QuIC) Android contributions for MSM devices and other products, does not properly validate upstream interface names, which allows attackers to bypass intended access restrictions via a crafted application.
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Analysis
by VulDB Data Team • 07/27/2022
The vulnerability identified as CVE-2016-2060 resides within the tethering controller implementation of netd, specifically in the server/TetherController.cpp file. This flaw affects Qualcomm Innovation Center QuIC Android contributions for MSM devices and related products, representing a critical security weakness in the network management subsystem. The issue stems from insufficient validation of upstream interface names within the tethering controller component, which forms part of the broader Android networking infrastructure responsible for managing network connections and tethering operations.
The technical flaw manifests when the tethering controller fails to properly validate the upstream interface names provided during tethering operations. This validation gap creates a path for malicious actors to manipulate the interface selection process and potentially bypass intended access restrictions. Attackers can exploit this weakness by crafting specially designed applications that leverage the improper validation to gain unauthorized network access or circumvent established security policies. The vulnerability operates at the system level within the network daemon, making it particularly dangerous as it can affect the fundamental network access controls that protect device connectivity and data transmission.
The operational impact of this vulnerability extends beyond simple access bypass scenarios, as it can enable attackers to establish unauthorized network connections and potentially gain access to sensitive device resources. When exploited, the vulnerability allows malicious applications to manipulate the tethering functionality and potentially redirect network traffic through unintended pathways. This weakness particularly affects devices utilizing Qualcomm MSM chipsets where the QuIC Android contributions are implemented, potentially compromising the security posture of numerous mobile devices and embedded systems. The attack surface includes scenarios where legitimate tethering operations could be subverted to provide unauthorized network access or create backdoor pathways for further exploitation.
Mitigation strategies for CVE-2016-2060 should focus on implementing proper input validation and sanitization within the tethering controller component. System administrators and device manufacturers should ensure that upstream interface names undergo rigorous validation checks before being processed by the netd service. This includes implementing strict parameter validation, input filtering, and access control mechanisms that prevent unauthorized interface manipulation. The fix should align with established security practices and standards such as those outlined in the CWE database under categories related to input validation and access control bypass. Additionally, implementing proper network segmentation and monitoring solutions can help detect anomalous tethering behavior that might indicate exploitation attempts. Organizations should also consider applying security patches from device vendors and monitoring for any signs of unauthorized network access or unexpected tethering operations that could indicate exploitation of this vulnerability.