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...

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...

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-2020-3480 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-2020-3480

CVE-2020-3480 corresponds to multiple DoS vulnerabilities in Cisco IOS XE Zone-Based Firewall. The flaws arise from incomplete handling of Layer 4 packets, enabling an unauthenticated, remote attacker to trigger a device reload or to stop forwarding traffic through the firewall by sending a speci...

CVE-2020-3480 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...

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...

Cisco IOS XE Software Zone-Based Firewall IP Fragmentation DoS (cisco-sa-20180328-fwip)

According to its self-reported version, Cisco IOS XE Software is affected by a vulnerability in the Zone-Based Firewall due to the way fragmented packets in the firewall code. An unauthenticated, remote attacker can exploit this by sending fragmented IP Version 4 or IP Version 6 packets through a...

The vulnerability of the Application Layer Gateway (ALG) and the ZBFW network interface of the Cisco IOS XE operating system, which allows a attacker to trigger a reboot of the vulnerable device

The vulnerability of the Application Layer Gateway ALG and the ZBFW network firewall of the Cisco IOS XE operating system exists due to insufficient validation of input data. Exploiting this vulnerability can allow a malicious actor to trigger a reboot of the vulnerable device...

Cisco IOS XE FTP ALG Denial of Service Vulnerability

Cisco IOS XE is a set of modular operating system based on Linux kernel developed by Cisco for its network equipment. A denial of service vulnerability exists in the FTP Application Layer Gateway ALG feature used by Network Address Translation NAT, NAT64, and ZBFW in Cisco IOS XE. The vulnerabili...

Cisco IOS XE Software Denial of Service Vulnerability (CNVD-2018-07304)

Cisco IOS XE Software is an operating system developed by Cisco for its network devices. A denial of service vulnerability exists in the Zone-Based Firewall code in Cisco IOS XE Software. A remote attacker could exploit this vulnerability to cause a denial of service crash...

Design/Logic Flaw

A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending...

CVE-2018-0157

A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending...

CVE-2018-0157

A vulnerability in the Zone-Based Firewall code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a device to reload. The vulnerability is due to the way fragmented packets are handled in the firewall code. An attacker could exploit this vulnerability by sending...