Executive Summary

This vulnerability is a privilege escalation issue in certain Hikvision DVR/NVR devices caused by improper authentication on the serial port. An attacker with physical access to the device can connect to the serial port and gain access to an unrestricted shell environment, allowing them to escalate their privileges on the device. [1]

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Impact Analysis

If exploited, this vulnerability allows an attacker with physical access to gain unrestricted shell access to the affected device, potentially compromising confidentiality, integrity, and availability of the device and its data. This could lead to unauthorized control, data theft, or disruption of device operations. [1]

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Detection Guidance

This vulnerability requires physical access to the device's serial port to be exploited. Detection involves verifying if your Hikvision DVR/NVR devices are among the affected models (e.g., DS-7104HGHI-F1, DS-7204HGHI-F1) and checking their firmware versions to see if they are at or below V4.30.122_201107. There are no specific network commands to detect this vulnerability remotely since it is a physical access issue. To detect it on the device, you would need to physically access the serial port and attempt to authenticate or access the shell environment, but no explicit commands are provided in the advisory for detection. [1]

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Mitigation Strategies

The immediate mitigation step is to update the affected Hikvision DVR/NVR devices to the fixed firmware versions released by Hikvision that address this vulnerability. Additionally, restrict physical access to the devices' serial ports to prevent unauthorized exploitation. [1]

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Compliance Impact

The provided resources do not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

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