CVE-2017-16725 in IP Camera
Summary
by MITRE
A Stack-based Buffer Overflow issue was discovered in Xiongmai Technology IP Cameras and DVRs using the NetSurveillance Web interface. The stack-based buffer overflow vulnerability has been identified, which may allow an attacker to execute code remotely or crash the device. After rebooting, the device restores itself to a more vulnerable state in which Telnet is accessible.
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Analysis
by VulDB Data Team • 01/27/2021
The vulnerability identified as CVE-2017-16725 represents a critical stack-based buffer overflow flaw within Xiongmai Technology IP cameras and digital video recorders that utilize the NetSurveillance web interface. This security weakness resides in the device's handling of input data within stack memory structures, creating an exploitable condition that can be leveraged by remote attackers to gain unauthorized control over affected systems. The vulnerability specifically manifests when the web interface processes user-supplied input without proper bounds checking, allowing malicious data to overflow into adjacent memory space and potentially overwrite critical program execution elements. The flaw demonstrates characteristics consistent with CWE-121 stack-based buffer overflow, where insufficient validation of input length permits memory corruption that can be exploited for arbitrary code execution.
The operational impact of this vulnerability extends beyond simple remote code execution to include complete device compromise and potential network infiltration. Attackers can exploit this weakness to execute malicious code remotely, effectively taking control of the affected IP cameras or DVR systems without requiring physical access or legitimate credentials. This remote code execution capability enables threat actors to install backdoors, modify device configurations, access stored video footage, or use the compromised devices as entry points for broader network attacks. The vulnerability's persistence is particularly concerning as the affected devices exhibit a recovery behavior where after rebooting, they restore themselves to a more vulnerable state with Telnet service enabled and accessible. This characteristic aligns with ATT&CK technique T1072 for remote services and represents a significant operational risk as it creates a recurring security gap that can be exploited multiple times during the device's operational lifecycle.
The security implications of CVE-2017-16725 extend to broader network infrastructure risks as these devices often serve as critical components in surveillance and security systems. When compromised, IP cameras and DVRs can provide attackers with persistent access points into protected environments, enabling long-term monitoring and data exfiltration. The combination of remote code execution capability and the Telnet accessibility post-reboot creates a particularly dangerous scenario where attackers can establish persistent footholds within networks. Organizations deploying Xiongmai technology products must recognize that this vulnerability can be exploited to undermine the fundamental security assumptions of their surveillance infrastructure, potentially exposing sensitive locations to unauthorized surveillance or manipulation. The vulnerability's exploitation requires minimal specialized knowledge, making it accessible to threat actors across various skill levels and increasing the likelihood of successful attacks. Network segmentation and access controls should be implemented to limit the potential impact of compromise, while regular firmware updates and security audits are essential to prevent exploitation of this and similar vulnerabilities in the device's operational lifecycle.