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.
Published: 2020-09-24
Score: 8.6 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2020-24692 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.
History

Wed, 13 Nov 2024 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco 1100 Integrated Services Router 1101 Integrated Services Router 1109 Integrated Services Router 1111x Integrated Services Router 111x Integrated Services Router 1120 Integrated Services Router 1160 Integrated Services Router 4221 Integrated Services Router 4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router 4431 Integrated Services Router 4461 Integrated Services Router Asr 1001-hx Asr 1001-x Asr 1002-hx Asr 1002-x Asr 1004 Asr 1006 Asr 1006-x Asr 1009-x Asr 1013 Csr 1000v Ios Xe
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2024-11-13T17:56:17.233Z

Reserved: 2019-12-12T00:00:00.000Z

Link: CVE-2020-3421

cve-icon Vulnrichment

Updated: 2024-08-04T07:30:58.726Z

cve-icon NVD

Status : Modified

Published: 2020-09-24T18:15:18.917

Modified: 2024-11-21T05:31:01.467

Link: CVE-2020-3421

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses