Attacker Value
Low
(1 user assessed)
Exploitability
High
(1 user assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Adjacent_network
0

CVE-2020-3110 (AKA: CDPwn)

Disclosure Date: February 05, 2020 •
CVE-2020-3110 CVSS v3 Base Score: 8.8
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Description

A vulnerability in the Cisco Discovery Protocol implementation for the Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to execute code remotely or cause a reload of an affected IP Camera. The 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 the targeted IP Camera. A successful exploit could allow the attacker to expose the affected IP Camera for remote code execution or cause it to reload unexpectedly, resulting in a denial of service (DoS) condition. 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). This vulnerability is fixed in Video Surveillance 8000 Series IP Camera Firmware Release 1.0.7 and later.

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2
Ratings
  • Attacker Value
    Low
  • Exploitability
    High
Technical Analysis

This is a heap buffer overflow vulnerability in the parser of CDP packets in the Cisco 8000 Series IP cameras. Successfully exploiting this vulnerability would lead to a denial of service condition or potentially access to the video feed. The affected binary reportedly lacks ASLR support, which would aid efforts to produce a functioning exploit.

An attacker would need to be on the local area network as the affected IP camera This is due to CDP traffic not being forwarded across network boundaries. An attacker leveraging this vulnerability would likely either be physically in the building or have compromised a host which is physically in the building.

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CVSS V3 Severity and Metrics
Base Score:
8.8 High
Impact Score:
5.9
Exploitability Score:
2.8
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Adjacent_network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
Cisco Video Surveillance 8000 Series IP Cameras 1.0.7
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • cisco

Products

  • video surveillance 8000p ip camera firmware,
  • video surveillance 8020 ip camera firmware,
  • video surveillance 8030 ip camera firmware,
  • video surveillance 8070 ip camera firmware,
  • video surveillance 8400 ip camera firmware,
  • video surveillance 8620 ip camera firmware,
  • video surveillance 8630 ip camera firmware,
  • video surveillance 8930 speed dome ip camera firmware
Technical Analysis