IVR Systems

Pierluigi Paganini May 29, 2018
Abusing Interactive Voice Response systems – Legacy Telecom [CVE-2018-11518]

A vulnerability tracked as CVE-2018-11518 could be exploited by attackers to power a phreaking attack on HCL legacy Interactive Voice Response systems that do not use VoIP. These IVR systems rely on various frequencies of audio signals; based on the frequency, certain commands and functions are processed. Since these frequencies are accepted within a phone call, an attacker can […]