NVD

CVE-2020-3480 Detail

Description

Multiple vulnerabilities in the Zone-Based Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload or stop forwarding traffic through the firewall. The vulnerabilities are due to incomplete handling of Layer 4 packets through the device. An attacker could exploit these vulnerabilities by sending a certain sequence of traffic patterns through the device. A successful exploit could allow the attacker to cause the device to reload or stop forwarding traffic through the firewall, resulting in a denial of service. For more information about these vulnerabilities, see the Details section of this advisory.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 8.6 HIGH

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

Nist CVSS score does not match with CNA score

CNA: Cisco Systems, Inc.

Base Score: 8.6 HIGH

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-zbfw-94ckG4G	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-754	Improper Check for Unusual or Exceptional Conditions	NIST Cisco Systems, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 10/08/2020 2:05:02 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 1406 characters. View Entire Change Record AND OR cpe:2.3:o:cisco:ios_xe:-::::::: OR cpe:2.3:h:cisco:asr_1001-hx:-:::::::* cpe:2.3:h:cisco:asr_1001-x:-:::::::* cpe:2.3:h:cisco:asr_1002-hx:-:::::::* cpe:2.3:h:cisco:asr_1002-x:-:::::::* cpe:2.3:h:cisco:asr_1004:-:::::::* cpe:2.3:h:cisco:asr_1006:-:::::::* cpe:2.3:h:cisco:asr_1006-x:-:::::::* cpe:2.3:h:cisco:asr_1009-x:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Added	CWE		NIST CWE-754
Changed	Reference Type	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-zbfw-94ckG4G No Types Assigned	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-zbfw-94ckG4G Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2020-3480
NVD Published Date:
09/24/2020
NVD Last Modified:
10/08/2020
Source:
Cisco Systems, Inc.

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