CVE-2023-30024 (a921_firmware)

The MagicJack device, a VoIP solution for internet phone calls, contains a hidden NAND flash memory partition allowing unauthorized read/write access. Attackers can exploit this by replacing the original software with a malicious version, leading to ransomware deployment on the host computer. Affected devices have firmware versions prior to magicJack A921 USB Phone Jack Rev 3.0 V1.4.

access attackers computer cve deployment device devices exploit firmware flash flash memory hidden host internet jack malicious memory phone phone calls ransomware software solution usb version voip