CVE-2022-20915

CVE-2022-20915 affects Cisco IOS XE Software implementing IPv6 VPN over MPLS 6VPE with Zone-Based Firewall (ZBFW). A crafted IPv6 packet forwarded from an IPv6-enabled VRF interface can cause the device to reload, producing a DoS. The issue arises from improper error handling of such packets on M...

CVE-2022-20915

A vulnerability in the implementation of IPv6 VPN over MPLS 6VPE with Zone-Based Firewall ZBFW of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper error handling of an IP...

Cisco IOS XE Software IPv6 VPN over MPLS Denial of Service Vulnerability

A vulnerability in the implementation of IPv6 VPN over MPLS 6VPE with Zone-Based Firewall ZBFW of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition on an affected device. This vulnerability is due to improper error handling of an IP...

PT-2022-6391 · Cisco · Cisco Ios Xe

Name of the Vulnerable Software and Affected Versions: Cisco IOS XE Software affected versions not specified Description: A vulnerability in the implementation of IPv6 VPN over MPLS 6VPE with Zone-Based Firewall ZBFW could allow an unauthenticated, adjacent attacker to cause a denial of service D...

The vulnerability of the implementation of the firewall function on Cisco IOS XE operating systems allows a hacker to bypass security restrictions.

The vulnerability of the Zone-Based Policy Firewall’s firewall function in Cisco IOS XE operating systems is related to deficiencies in access control when configuring Unified Threat Defense UTD or Application Quality of Experience AppQoE settings. Exploiting this vulnerability allows a malicious...

Cisco IOS XE Software Zone Based Policy Firewall ICMP UDP Inspection (cisco-sa-zbfw-pP9jfzwL)

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

CVE-2021-1625

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

CVE-2021-1625

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

Design/Logic Flaw

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

CVE-2021-1625 Cisco IOS XE Software Zone-Based Policy Firewall ICMP and UDP Inspection Vulnerability

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

CVE-2021-1625

Cisco CVE-2021-1625 affects the Zone-Based Policy Firewall in Cisco IOS XE Software. The issue arises because ICMP and UDP responder-to-initiator flows are not inspected when UTD or AppQoE is configured, enabling an unauthenticated remote attacker to inject traffic; resulting traffic may be dropp...

CVE-2021-1625 Cisco IOS XE Software Zone-Based Policy Firewall ICMP and UDP Inspection Vulnerability

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

Cisco IOS XE Software Zone-Based Policy Firewall ICMP and UDP Inspection Vulnerability

A vulnerability in the Zone-Based Policy Firewall feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent the Zone-Based Policy Firewall from correctly classifying traffic. This vulnerability exists because ICMP and UDP responder-to-initiator flows are not...

Cisco IOS XE Software Zone Based Firewall DoS (cisco-sa-zbfw-94ckG4G)

According to its self-reported version, IOS-XE is affected by multiple denial of service vulnerabilities in the zone-based firewall feature due to incomplete handling of Layer 4 packets through the device. An unauthenticated, remote attacker can exploit these, by sending a certain sequence of...

CVE-2020-3421

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...

CVE-2020-3421

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...

Design/Logic Flaw

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...

Design/Logic Flaw

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...

CVE-2020-3421 Cisco IOS XE Software Zone-Based Firewall Denial of Service Vulnerabilities

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...

CVE-2020-3421

The CVE-2020-3421 entry concerns Cisco IOS XE Software Zone-Based Firewall vulnerabilities. Affected component: Zone-Based Firewall handling of Layer 4 traffic on Cisco IOS XE. Root cause: incomplete handling of Layer 4 packets through the device, enabling an unauthenticated, remote attacker to c...