8.8
HIGH
CVE-2020-3111
"Cisco IP Phone Cisco Discovery Protocol Remote Code Execution and Denial of Service Vulnerability"
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).

INFO

Published Date :

Feb. 5, 2020, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 5:30 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2020-3111 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-3111 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco ip_conference_phone_8832_firmware
2 Cisco ip_phone_7811_firmware
3 Cisco ip_phone_7821_firmware
4 Cisco ip_phone_7841_firmware
5 Cisco ip_phone_7861_firmware
6 Cisco ip_phone_8811_firmware
7 Cisco ip_phone_8841_firmware
8 Cisco ip_phone_8845_firmware
9 Cisco ip_phone_8851_firmware
10 Cisco ip_phone_8861_firmware
11 Cisco ip_phone_8865_firmware
12 Cisco wireless_ip_phone_8821_firmware
13 Cisco wireless_ip_phone_8821-ex_firmware
14 Cisco ip_conference_phone_7832_firmware
15 Cisco ip_phone_6871_firmware
16 Cisco ip_phone_6861_firmware
17 Cisco ip_phone_6851_firmware
18 Cisco ip_phone_6841_firmware
19 Cisco ip_phone_8811_with_multiplatform_firmware
20 Cisco ip_phone_8841_with_multiplatform_firmware
21 Cisco ip_phone_8845_with_multiplatform_firmware
22 Cisco ip_phone_8851_with_multiplatform_firmware
23 Cisco ip_phone_8861_with_multiplatform_firmware
24 Cisco ip_phone_8865_with_multiplatform_firmware
25 Cisco ip_conference_phone_7832_with_multiplatform_firmware
26 Cisco ip_conference_phone_8832_with_multiplatform_firmware
27 Cisco ip_phone_6821_firmware
28 Cisco ip_phone_7811_with_multiplatform_firmware
29 Cisco ip_phone_7821_with_multiplatform_firmware
30 Cisco ip_phone_7841_with_multiplatform_firmware
31 Cisco ip_phone_7861_with_multiplatform_firmware
32 Cisco unified_ip_conference_phone_8831_firmware
33 Cisco unified_ip_conference_phone_8831_for_third-party_call_control_firmware
34 Cisco ip_phone_7861
35 Cisco ip_phone_8851
36 Cisco ip_phone_6841
37 Cisco ip_phone_6851
38 Cisco ip_phone_7811
39 Cisco ip_phone_7821
40 Cisco ip_phone_7841
41 Cisco ip_phone_8811
42 Cisco ip_phone_8841
43 Cisco ip_phone_8845
44 Cisco ip_phone_8861
45 Cisco ip_phone_8865
46 Cisco ip_conference_phone_7832
47 Cisco ip_conference_phone_8832
48 Cisco wireless_ip_phone_8821
49 Cisco wireless_ip_phone_8821-ex
50 Cisco ip_phone_6861
51 Cisco ip_phone_6871
52 Cisco ip_phone_6821
53 Cisco unified_ip_conference_phone_8831
54 Cisco unified_ip_conference_phone_8831_for_third-party_call_control
References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Notes for Latest Cisco vulns

Updated: 11 months ago
4 stars 0 fork 0 watcher
Born at : Feb. 10, 2020, 3:24 a.m. This repo has been linked 6 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-3111 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-3111 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Feb. 07, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html No Types Assigned http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html Third Party Advisory, VDB Entry
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200205-voip-phones-rce-dos Vendor Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_6821_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_6821:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_6841_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_6841:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_6851_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_6851:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_6861_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_6861:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_6871_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_6871:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7811_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_7811_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_7811:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7821_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_7821_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_7821:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7841_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_7841_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_7841:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_7861_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_7861_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_7861:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8811_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8811_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8811:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8841_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8841_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8841:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8851_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8851_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8851:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8861_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8861_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8861:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8845_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8845_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8845:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:ip_phone_8865_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 12.7\(1\) *cpe:2.3:o:cisco:ip_phone_8865_with_multiplatform_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.3\(1\)sr1 OR cpe:2.3:h:cisco:ip_phone_8865:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:unified_ip_conference_phone_8831_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 10.3\(1\)sr6 OR cpe:2.3:h:cisco:unified_ip_conference_phone_8831:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:unified_ip_conference_phone_8831_for_third-party_call_control_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:unified_ip_conference_phone_8831_for_third-party_call_control:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:wireless_ip_phone_8821_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.0\(5\)sr2 OR cpe:2.3:h:cisco:wireless_ip_phone_8821:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:wireless_ip_phone_8821-ex_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 11.0\(5\)sr2 OR cpe:2.3:h:cisco:wireless_ip_phone_8821-ex:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 05, 2020

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/156203/Cisco-Discovery-Protocol-CDP-Remote-Device-Takeover.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-3111 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-3111 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-23: File Content Injection File Content Injection CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-73: User-Controlled Filename User-Controlled Filename CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-81: Web Server Logs Tampering Web Server Logs Tampering CAPEC-83: XPath Injection XPath Injection CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-88: OS Command Injection OS Command Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-109: Object Relational Mapping Injection Object Relational Mapping Injection CAPEC-110: SQL Injection through SOAP Parameter Tampering SQL Injection through SOAP Parameter Tampering CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-136: LDAP Injection LDAP Injection CAPEC-153: Input Data Manipulation Input Data Manipulation CAPEC-182: Flash Injection Flash Injection CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-250: XML Injection XML Injection CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data Fuzzing for garnering other adjacent user/sensitive data CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-473: Signature Spoof Signature Spoof CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-664: Server Side Request Forgery Server Side Request Forgery
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.07 }} 0.00%

score

0.33983

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability