CVE-2021-1521

A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause an affected IP camera to reload. This vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected IP camera. A successful exploit could allow the attacker to cause the affected IP camera to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

• cisco video surveillance 8400 firmware (< 1.0.9-11) • cisco video surveillance 8000p firmware (< 1.0.9-11) • cisco video surveillance 8020 firmware (< 1.0.9-11) • cisco video surveillance 8030 firmware (< 1.0.9-11) • cisco video surveillance 8070 firmware (< 1.0.9-11) • cisco video surveillance 8620 firmware (< 1.0.9-11) • cisco video surveillance 8630 firmware (< 1.0.9-11) • cisco video surveillance 8930 firmware (< 1.0.9-11)