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MEDIUM · 6.5

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 r...

Vulnerability Description

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).

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoVideo Surveillance 8400 Firmware< 1.0.9-11
CiscoVideo Surveillance 8400-
CiscoVideo Surveillance 8000P Firmware< 1.0.9-11
CiscoVideo Surveillance 8000P-
CiscoVideo Surveillance 8020 Firmware< 1.0.9-11
CiscoVideo Surveillance 8020-
CiscoVideo Surveillance 8030 Firmware< 1.0.9-11
CiscoVideo Surveillance 8030-
CiscoVideo Surveillance 8070 Firmware< 1.0.9-11
CiscoVideo Surveillance 8070-
CiscoVideo Surveillance 8620 Firmware< 1.0.9-11
CiscoVideo Surveillance 8620-
CiscoVideo Surveillance 8630 Firmware< 1.0.9-11
CiscoVideo Surveillance 8630-
CiscoVideo Surveillance 8930 Firmware< 1.0.9-11
CiscoVideo Surveillance 8930-

Related Weaknesses (CWE)

CWE-119

References

FAQ

What is CVE-2021-1521?

CVE-2021-1521 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 r...

How severe is CVE-2021-1521?

CVE-2021-1521 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-1521?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Video Surveillance 8400 Firmware, Cisco Video Surveillance 8400, Cisco Video Surveillance 8000P Firmware, Cisco Video Surveillance 8000P, Cisco Video Surveillance 8020 Firmware.