Input validation

A vulnerability in the web server authentication of Cisco IOS XE Software could allow an authenticated, remote attacker to crash the web server on the device. The vulnerability is due to insufficient input validation during authentication. An attacker could exploit this vulnerability by entering...

Design/Logic Flaw

A vulnerability in the RESTCONF and NETCONF-YANG access control list ACL function of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect processing of the ACL that is tied to the RESTCONF or NETCONF-YANG featur...

Design/Logic Flaw

A vulnerability in the CLI parser of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker to access files from the flash: filesystem. The vulnerability is due to insufficient application of restrictions during the execution of a specific command. An attacker...

Design/Logic Flaw

A vulnerability in the file system permissions of Cisco IOS XE Software could allow an authenticated, local attacker to obtain read and write access to critical configuration or system files. The vulnerability is due to insufficient file system permissions on an affected device. An attacker could...

Input validation

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points CAPWAP protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition of an affected...

Design/Logic Flaw

Multiple vulnerabilities in the web management framework of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to elevate privileges to the level of an Administrator user on an affected device. For more information about these vulnerabilities, see the...

Design/Logic Flaw

Multiple vulnerabilities in the web management framework of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to gain unauthorized read access to sensitive data or cause the web management software to hang or crash, resulting in a denial of service DoS...

Input validation

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points CAPWAP protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition of an affected...

Design/Logic Flaw

A vulnerability in the file system on the pluggable USB 3.0 Solid State Drive SSD for Cisco IOS XE Software could allow an authenticated, physical attacker to remove the USB 3.0 SSD and modify sensitive areas of the file system, including the namespace container protections. The vulnerability...

Race condition

A vulnerability in the IP Address Resolution Protocol ARP feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers with a 20-Gbps Embedded Services Processor ESP installed could allow an unauthenticated, adjacent attacker to cause an affected device to reload,...

Input validation

Multiple vulnerabilities in the Control and Provisioning of Wireless Access Points CAPWAP protocol processing of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, adjacent attacker to cause a denial of service DoS condition of an affected...

Design/Logic Flaw

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to inject a command to the underlying operating system that will execute with root privileges upon the next reboot of the device. The authenticated user must have privileged EXEC permissions on the...

CVE-2020-3359

CVE-2020-3359 affects Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers. The issue stems from improper validation in the multicast DNS (mDNS) feature, allowing an unauthenticated remote attacker to cause a DoS by sending a crafted mDNS packet, potentially causing the devic...

CVE-2020-3396

The CVE-2020-3396 issue affects Cisco IOS XE Software IOx Guest Shell running on pluggable USB 3.0 SSDs. The root cause is that USB SSD control data is not stored on the device’s internal boot flash, enabling a physical attacker to remove the USB drive, alter or delete files, then reinsert it to ...

CVE-2020-3396 Cisco IOS XE Software IOx Guest Shell USB SSD Namespace Protection Privilege Escalation Vulnerability

A vulnerability in the file system on the pluggable USB 3.0 Solid State Drive SSD for Cisco IOS XE Software could allow an authenticated, physical attacker to remove the USB 3.0 SSD and modify sensitive areas of the file system, including the namespace container protections. The vulnerability...

CVE-2020-3399

CVE-2020-3399 describes a DoS in Cisco IOS XE CAPWAP processing for Catalyst 9800 wireless controllers due to insufficient input validation during CAPWAP packet handling, causing a buffer over-read that can crash and reload the device. The vulnerable component is CAPWAP packet processing in Cisco...

CVE-2020-3400

CVE-2020-3400 affects Cisco IOS XE Software (Web UI) where insufficient authorization of web UI access requests allows an authenticated, remote attacker to access parts of the Web UI that should be restricted. An attacker can send a crafted HTTP request to the Web UI and cause a Read-Only user to...

CVE-2020-3407

CVE-2020-3407 affects Cisco IOS XE Software RESTCONF and NETCONF-YANG ACL handling. An unauthenticated, remote attacker can trigger the ACL processing issue to reload the device, causing a DoS. Cisco’s advisory confirms fixes via software updates; apply the recommended Cisco security advisories/u...

CVE-2020-3422

CVE-2020-3422 describes a DoS vulnerability in Cisco IOS XE IP Service Level Agreements (SLA) responder. An unauthenticated, remote attacker can cause the SLA responder to reuse an existing port, consuming a port that could be used by another feature and leading to DoS on the affected device. Roo...

CVE-2020-3423 Cisco IOS XE Software Arbitrary Code Execution Vulnerability

A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system OS of an affected device. The vulnerability is due to...