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CVE-2020-3207

Cisco IOS XE Software Command Injection Vulnerability

A vulnerability in the processing of boot options of specific Cisco IOS XE Software switches could allow an authenticated, local attacker with root shell access to the underlying operating system (OS) to conduct a command injection attack during device boot. This vulnerability is due to insufficient input validation checks while processing boot options. An attacker could exploit this vulnerability by modifying device boot options to execute attacker-provided code. A successful exploit may allow an attacker to bypass the Secure Boot process and execute malicious code on an affected device with root-level privileges.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed
Vendors
Cisco
Products
Catalyst 3650-12x48uq Catalyst 3650-12x48ur Catalyst 3650-12x48uz and 53 more
CVE-2019-12658

Cisco IOS XE Software Filesystem Exhaustion Denial of Service Vulnerability

A vulnerability in the filesystem resource management code of Cisco IOS XE Software could allow an unauthenticated, remote attacker to exhaust filesystem resources on an affected device and cause a denial of service (DoS) condition. The vulnerability is due to ineffective management of the underlying filesystem resources. An attacker could exploit this vulnerability by performing specific actions that result in messages being sent to specific operating system log files. A successful exploit could allow the attacker to exhaust available filesystem space on an affected device. This could cause the device to crash and reload, resulting in a DoS condition for clients whose network traffic is transiting the device. Upon reload of the device, the impacted filesystem space is cleared, and the device will return to normal operation. However, continued exploitation of this vulnerability could cause subsequent forced crashes and reloads, which could lead to an extended DoS condition.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Cisco
Products
1100 Integrated Services R 4221 Integrated Services R 4321 Integrated Services R and 148 more
CVE-2019-12657

Cisco IOS XE Software Unified Threat Defense Denial of Service Vulnerability

A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Vendors
Cisco
Products
4321 Integrated Services Router 4331 Integrated Services Router 4351 Integrated Services Router and 115 more
CVE-2019-12624

Cisco IOS XE NGWC Legacy Wireless Device Manager GUI Cross-Site Request Forgery Vulnerability

A vulnerability in the web-based management interface of Cisco IOS XE New Generation Wireless Controller (NGWC) could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack and perform arbitrary actions on an affected device. The vulnerability is due to insufficient CSRF protections for the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to follow a crafted link. A successful exploit could allow the attacker to perform arbitrary actions on an affected device by using a web browser and with the privileges of the user.

CVSS 3.0 · 8.8 High EPSS 18.2% KEV · Not listed
Vendors
Cisco
Products
5760 Wireless Lan Controller Catalyst 3650-12x48uq Catalyst 3650-12x48ur and 16 more