CVE-2021-1384

Cisco IOx for IOS XE Software Command Injection Vulnerability

A vulnerability in Cisco IOx application hosting environment of Cisco IOS XE Software could allow an authenticated, remote attacker to inject commands into the underlying operating system as the root user. This vulnerability is due to incomplete validation of fields in the application packages loaded onto IOx. An attacker could exploit this vulnerability by creating a crafted application .tar file and loading it onto the device. A successful exploit could allow the attacker to perform command injection into the underlying operating system as the root user.

CVSS 3.1 · 6.5 Medium EPSS 35.4% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1383

Cisco IOS XE SD-WAN Software Parameter Injection Vulnerabilities

Multiple vulnerabilities in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system with root privileges. These vulnerabilities are due to insufficient input validation of certain CLI commands. An attacker could exploit these vulnerabilities by authenticating to the device and submitting crafted input to the CLI. The attacker must be authenticated as an administrative user to execute the affected commands. A successful exploit could allow the attacker to access the underlying operating system with root privileges.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe Ios Xe Sd-wan

CVE-2021-1382

Cisco IOS XE SD-WAN Software Command Injection Vulnerability

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to inject arbitrary commands to be executed with root privileges on the underlying operating system. This vulnerability is due to insufficient input validation on certain CLI commands. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the CLI. The attacker must be authenticated as an administrative user to execute the affected commands. A successful exploit could allow the attacker to execute commands with root privileges.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1381

Cisco IOS XE Software Active Debug Code Vulnerability

A vulnerability in Cisco IOS XE Software could allow an authenticated, local attacker with high privileges or an unauthenticated attacker with physical access to the device to open a debugging console. The vulnerability is due to insufficient command authorization restrictions. An attacker could exploit this vulnerability by running commands on the hardware platform to open a debugging console. A successful exploit could allow the attacker to access a debugging console.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1377

Cisco IOS and IOS XE Software ARP Resource Management Exhaustion Denial of Service Vulnerability

A vulnerability in Address Resolution Protocol (ARP) management of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent an affected device from resolving ARP entries for legitimate hosts on the connected subnets. This vulnerability exists because ARP entries are mismanaged. An attacker could exploit this vulnerability by continuously sending traffic that results in incomplete ARP entries. A successful exploit could allow the attacker to cause ARP requests on the device to be unsuccessful for legitimate hosts, resulting in a denial of service (DoS) condition.

CVSS 3.1 · 5.8 Medium EPSS 1.5% KEV · Not listed

Vendors

Cisco

Products

Ios Ios Xe

CVE-2021-1376

Cisco IOS XE Software Fast Reload Vulnerabilities

Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating system, install and boot a malicious software image, or execute unsigned binaries on an affected device. These vulnerabilities are due to improper checks performed by system boot routines. To exploit these vulnerabilities, the attacker would need privileged access to the CLI of the device. A successful exploit could allow the attacker to either execute arbitrary code on the underlying operating system or execute unsigned code and bypass the image verification check part of the secure boot process. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1375

Cisco IOS XE Software Fast Reload Vulnerabilities

Multiple vulnerabilities in the fast reload feature of Cisco IOS XE Software running on Cisco Catalyst 3850, Cisco Catalyst 9300, and Cisco Catalyst 9300L Series Switches could allow an authenticated, local attacker to either execute arbitrary code on the underlying operating system, install and boot a malicious software image, or execute unsigned binaries on an affected device. These vulnerabilities are due to improper checks performed by system boot routines. To exploit these vulnerabilities, the attacker would need privileged access to the CLI of the device. A successful exploit could allow the attacker to either execute arbitrary code on the underlying operating system or execute unsigned code and bypass the image verification check part of the secure boot process. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 6.7 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1374

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family Stored Cross-Site Scripting Vulnerability

A vulnerability in the web-based management interface of Cisco IOS XE Wireless Controller software for the Catalyst 9000 Family of switches could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against another user of the web-based management interface of an affected device. The vulnerability is due to insufficient validation of user-supplied input by the web-based management interface of an affected device. An attacker could exploit this vulnerability by authenticating to the device as a high-privileged user, adding certain configurations with malicious code in one of its fields, and persuading another user to click on it. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or to access sensitive, browser-based information.

CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1373

Cisco IOS XE Wireless Controller Software for the Catalyst 9000 Family CAPWAP Denial of Service Vulnerability

A vulnerability in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol processing of Cisco IOS XE Wireless Controller Software for the Cisco Catalyst 9000 Family Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition of an affected device. The vulnerability is due to insufficient validation of CAPWAP packets. An attacker could exploit this vulnerability by sending a malformed CAPWAP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition.

CVSS 3.1 · 8.6 High EPSS 1.5% KEV · Not listed

Vendors

Cisco

Products

Catalyst 9300 Catalyst 9400 Catalyst 9500 and 5 more

CVE-2021-1371

Cisco IOS XE SD-WAN Software Console Privilege Escalation Vulnerability

A vulnerability in the role-based access control of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker with read-only privileges to obtain administrative privileges by using the console port when the device is in the default SD-WAN configuration. This vulnerability occurs because the default configuration is applied for console authentication and authorization. An attacker could exploit this vulnerability by connecting to the console port and authenticating as a read-only user. A successful exploit could allow a user with read-only permissions to access administrative privileges.

CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

1100 Integrated Services Router 1101 Integrated Services Router 1109 Integrated Services Router and 14 more

CVE-2021-1356

Cisco IOS XE Software Web UI Denial of Service Vulnerabilities

Multiple vulnerabilities in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to cause the web UI software to become unresponsive and consume vty line instances, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient error handling in the web UI. An attacker could exploit these vulnerabilities by sending crafted HTTP packets to an affected device. A successful exploit could allow the attacker to cause the web UI software to become unresponsive and consume all available vty lines, preventing new session establishment and resulting in a DoS condition. Manual intervention would be required to regain web UI and vty session functionality. Note: These vulnerabilities do not affect the console connection.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1352

Cisco IOS XE Software DECnet Phase IV/OSI Denial of Service Vulnerability

A vulnerability in the DECnet Phase IV and DECnet/OSI protocol processing of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of DECnet traffic that is received by an affected device. An attacker could exploit this vulnerability by sending DECnet traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1305

Cisco SD-WAN vManage Authorization Bypass Vulnerabilities

Multiple vulnerabilities in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to bypass authorization and modify the configuration of an affected system, gain access to sensitive information, and view information that they are not authorized to access. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 8.8 High EPSS 1.3% KEV · Not listed

Vendors

Cisco

Products

Ios Xe Sd-wan Sd-wan Firmware Sd-wan Vbond Orchestrator and 9 more

CVE-2021-1301

Cisco SD-WAN Buffer Overflow Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 9.8 Critical EPSS 2.1% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more

CVE-2021-1300

Cisco SD-WAN Buffer Overflow Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 9.8 Critical EPSS 2.2% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more

CVE-2021-1281

Cisco IOS XE SD-WAN Software Privilege Escalation Vulnerability

A vulnerability in CLI management in Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to access the underlying operating system as the root user. This vulnerability is due to the way the software handles concurrent CLI sessions. An attacker could exploit this vulnerability by authenticating to the device as an administrative user and executing a sequence of commands. A successful exploit could allow the attacker to obtain access to the underlying operating system as the root user.

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Cisco

Products

Ios Xe

CVE-2021-1279

Cisco SD-WAN Denial of Service Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 8.6 High EPSS 1.4% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more

CVE-2021-1278

Cisco SD-WAN Denial of Service Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 8.6 High EPSS 1.7% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more

CVE-2021-1274

Cisco SD-WAN Denial of Service Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 8.6 High EPSS 1.9% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more

CVE-2021-1273

Cisco SD-WAN Denial of Service Vulnerabilities

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

CVSS 3.1 · 8.6 High EPSS 1.9% KEV · Not listed

Vendors

Cisco

Products

Catalyst Sd-wan Manager Ios Xe Sd-wan Sd-wan Firmware and 10 more