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Rewterz Threat Alert – GADOLINIUM Using Cloud Services and Open Source Tools
September 25, 2020
Rewterz
Rewterz Threat Advisory – Cisco IOS XE Software Privilege Escalation Vulnerabilities
September 25, 2020

Rewterz Threat Advisory – Cisco IOS XE Software Zone-Based Firewall Denial of Service Vulnerabilities

Severity

High

Analysis Summary

CVE-2020-3421, CVE-2020-3480

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.

Impact

Denial of service

Affected Vendors

Cisco

Remediation

Refer to Cisco advisory for the complete list of affected products and respective patches.

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