Executive Summary

This vulnerability involves multiple buffer overflow issues in the openSchedWifi function of the Tenda AC6 router firmware version 15.03.06.50. Attackers can exploit these flaws by injecting specially crafted payloads into the schedStartTime and schedEndTime parameters, which can cause the device to crash or behave unexpectedly. [1]

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Impact Analysis

Exploiting this vulnerability can lead to a Denial of Service (DoS) condition on the affected Tenda AC6 device, making the device unavailable or unresponsive. This can disrupt network connectivity and potentially impact any services relying on the router. [1]

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Detection Guidance

Detection can be performed by monitoring for unusual or malformed packets targeting the schedStartTime and schedEndTime parameters of the openSchedWifi function in Tenda AC6 devices. Specific commands are not detailed in the provided resources, but reviewing network traffic for suspicious payloads or using the proof-of-concept code available in Resource 1 may assist in detection. [1]

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Mitigation Strategies

Immediate mitigation steps include avoiding the use of vulnerable firmware versions of Tenda AC6 (v.15.03.06.50) and restricting access to the device's management interface to trusted networks only. Applying any available patches or updates from the vendor is recommended. Additionally, monitoring and filtering network traffic to block crafted payloads targeting schedStartTime and schedEndTime parameters can help reduce risk. [1]

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