Buffer Overflow Vulnerabilities in Wavlink AC3000 Router

CVE-2024-39803

What is CVE-2024-39803?

Multiple buffer overflow vulnerabilities have been identified in the qos.cgi qos_settings() functionality of the Wavlink AC3000 M33A8 router. An attacker can exploit these vulnerabilities by crafting a specially designed HTTP request during authenticated sessions, which may lead to a stack-based buffer overflow. A specific risk arises from the sel_mode POST parameter, further compound by the lack of proper bounds checking. This situation presents a significant security risk, as it could lead to unauthorized access and manipulation of system memory.

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