CVE-2020-3111

CVSS V2 High 8.3 CVSS V3 High 8.8
Description
A vulnerability in the Cisco Discovery Protocol implementation for the Cisco IP Phone could allow an unauthenticated, adjacent attacker to remotely execute code with root privileges or cause a reload of an affected IP phone. The vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to the targeted IP phone. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, 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).
Overview
  • CVE ID
  • CVE-2020-3111
  • Assigner
  • ykramarz@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-02-05T18:15:10
  • Last Modified Date
  • 2020-02-07T19:43:52
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_6821_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_6821:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_6841_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_6841:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_6851_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_6851:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_6861_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_6861:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_6871_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_6871:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_7811_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_7821_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_7841_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_7861_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8845_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:ip_phone_8865_firmware:*:*:*:*:*:*:*:* 1 OR 12.7\(1\)
cpe:2.3:o:cisco:ip_phone_8865_with_multiplatform_firmware:*:*:*:*:*:*:*:* 1 OR 11.3\(1\)sr1
cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:unified_ip_conference_phone_8831_firmware:*:*:*:*:*:*:*:* 1 OR 10.3\(1\)sr6
cpe:2.3:h:cisco:unified_ip_conference_phone_8831:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:unified_ip_conference_phone_8831_for_third-party_call_control_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:cisco:unified_ip_conference_phone_8831_for_third-party_call_control:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:*:*:*:*:*:*:*:* 1 OR 11.0\(5\)sr2
cpe:2.3:h:cisco:wireless_ip_phone_8821:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:*:*:*:*:*:*:*:* 1 OR 11.0\(5\)sr2
cpe:2.3:h:cisco:wireless_ip_phone_8821-ex:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:A/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • ADJACENT_NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 8.3
  • Severity
  • HIGH
  • Exploitability Score
  • 6.5
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • ADJACENT_NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos Vendor Advisory
http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-3111
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-3111
History
Created Old Value New Value Data Type Notes
2022-05-10 16:50:45 Added to TrackCVE
2022-12-04 10:41:43 psirt@cisco.com ykramarz@cisco.com CVE Assigner updated
2022-12-04 10:41:43 2020-02-05T18:15Z 2020-02-05T18:15:10 CVE Published Date updated
2022-12-04 10:41:43 2020-02-07T19:43:52 CVE Modified Date updated
2022-12-04 10:41:43 Analyzed Vulnerability Status updated