Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-3111

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
05/02/2020
Last modified:
07/02/2020

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).

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 8.30 HIGH
Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
8.30
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ip_conference_phone_7832_firmware:*:*:*:*:*:*:*:* 12.7\(1\) (excluding)
cpe:2.3:o:cisco:ip_conference_phone_7832_with_multiplatform_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_conference_phone_7832:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_conference_phone_8832_firmware:*:*:*:*:*:*:*:* 12.7\(1\) (excluding)
cpe:2.3:o:cisco:ip_conference_phone_8832_with_multiplatform_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_conference_phone_8832:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_6821_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_phone_6821:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_6841_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_phone_6841:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_6851_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_phone_6851:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_6861_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)
cpe:2.3:h:cisco:ip_phone_6861:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ip_phone_6871_firmware:*:*:*:*:*:*:*:* 11.3\(1\)sr1 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools