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CVE-2020-3517

Severity CVSS v4.0:
Pending analysis
Type:
CWE-476 NULL Pointer Dereference
Publication date:
27/08/2020
Last modified:
20/04/2023

Description

A vulnerability in the Cisco Fabric Services component of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated attacker to cause process crashes, which could result in a denial of service (DoS) condition on an affected device. The attack vector is configuration dependent and could be remote or adjacent. For more information about the attack vector, see the Details section of this advisory. The vulnerability is due to insufficient error handling when the affected software parses Cisco Fabric Services messages. An attacker could exploit this vulnerability by sending malicious Cisco Fabric Services messages to an affected device. A successful exploit could allow the attacker to cause a reload of an affected device, which could result in a DoS condition.

Impact

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

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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

Base Score 3.x
8.60
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

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

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:* 1.1 (including) 1.1.4.179 (excluding)
cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:* 2.0 (including) 2.0.1.153 (excluding)
cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:* 2.1 (including) 2.1.1.86 (excluding)
cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:* 2.2 (including) 2.2.1.70 (excluding)
cpe:2.3:h:cisco:firepower_4110:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4112:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4115:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4125:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4140:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4145:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_4150:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:firepower_9300:-:*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:6.0\(2\)a3\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:nx-os:6.0\(2\)a3\(2\):*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools