Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-3119

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
05/02/2020
Last modified:
12/02/2020

Description

A vulnerability in the Cisco Discovery Protocol implementation for Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code or cause a reload on an affected device. The vulnerability exists because the Cisco Discovery Protocol parser does not properly validate input for certain fields in a Cisco Discovery Protocol message. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. An successful exploit could allow the attacker to cause a stack overflow, which could allow the attacker to execute arbitrary code with administrative privileges on an affected device. 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:nx-os:*:*:*:*:*:*:*:* 7.0\(3\)f2 (including) 9.3\(2\) (excluding)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* 7.0\(3\)i (including) 7.0\(3\)i7\(8\) (excluding)
cpe:2.3:h:cisco:nexus_3016:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3064:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3064-t:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31108pc-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31108tc-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132q-v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:nexus_3172:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools