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Arcadyan Livebox Fibra PRV3399B_B_LT contains an authentication bypass / missing authentication issue in the /firstconnection.cgi endpoint that allows a remote or local attacker to modify the GPON link value without authentication. By sending crafted requests to this endpoint, an attacker can alter WAN/GPON connection parameters, resulting in disruption of the device's internet connectivity.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a working exploit for CVE-2024-57725, a critical unauthenticated vulnerability in Arcadyan LiveboxFibra routers (PRV3399B_B_LT) distributed by Orange and Jazztel in Spain. The vulnerability allows attackers to extract the GPON password (link value) via the /cgi/cgi_authpage.js endpoint and to change it via the /firstconnection.cgi endpoint, both without authentication. The repository contains two Python scripts: 'check_ont_value.py' (extracts and displays the current GPON password and related information) and 'change_ont_value.py' (modifies the GPON password, causing a denial of service by disconnecting the router). The scripts automate the exploitation steps described in the README, which also details the vulnerability, exploitation process, and recommended mitigations. The attack requires network access to the router's management interface, either locally or via exposed services. The exploit is operational, providing both information disclosure and denial of service capabilities.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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