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A buffer overflow vulnerability exists in the LINKSYS EA7500 router firmware version 3.0.1.207964. The vulnerability is triggered by a specially crafted HTTP request to the IGD UPnP service, which can result in a buffer overflow condition. This allows a remote attacker to execute arbitrary code on the device.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides proof-of-concept (PoC) exploits for CVE-2023-46012, a stack buffer overflow vulnerability in the IGD UPnP service of Linksys EA7500 routers (and potentially other models/firmware). The repository contains a detailed README.md explaining the vulnerability, root cause, and exploitation method, as well as two Python PoC scripts (poc.py and poc_v1.1.5.190349.py). Both scripts send a specially crafted SOAP XML request to the router's UPnP control endpoint (default port 49152), targeting the SetDefaultConnectionService action. The payloads are designed to overflow a 184-byte stack buffer, with the potential to overwrite the return address and hijack control flow. The PoCs demonstrate the overflow but do not include a working shellcode for remote code execution. The README also provides debugging tips and links to firmware and further information. The exploit is network-adjacent, unauthenticated, and targets the /usr/sbin/IGD binary via HTTP POST requests to /upnp/control/Layer3Forwarding.
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