Vulnerability Description
A vulnerability in the application-hosting subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to root on an affected device. The attacker could execute IOS XE commands outside the application-hosting subsystem Docker container as well as on the underlying Linux operating system. These commands could be run as the root user. The vulnerability is due to a combination of two factors: (a) incomplete input validation of the user payload of CLI commands, and (b) improper role-based access control (RBAC) when commands are issued at the command line within the application-hosting subsystem. An attacker could exploit this vulnerability by using a CLI command with crafted user input. A successful exploit could allow the lower-privileged attacker to execute arbitrary CLI commands with root privileges. The attacker would need valid user credentials to exploit this vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | 16.12.1 |
| Cisco | 1100-4G Integrated Services Router | - |
| Cisco | 1100-4Gltegb Integrated Services Router | - |
| Cisco | 1100-4Gltena Integrated Services Router | - |
| Cisco | 1100-4P Integrated Services Router | - |
| Cisco | 1100-6G Integrated Services Router | - |
| Cisco | 1100-8P Integrated Services Router | - |
| Cisco | 1100-Lte Integrated Services Router | - |
| Cisco | 1100 Integrated Services Router | - |
| Cisco | 1101-4P Integrated Services Router | - |
| Cisco | 1101 Integrated Services Router | - |
| Cisco | 1109-2P Integrated Services Router | - |
| Cisco | 1109-4P Integrated Services Router | - |
| Cisco | 1109 Integrated Services Router | - |
| Cisco | 1111X-8P Integrated Services Router | - |
| Cisco | 1111X Integrated Services Router | - |
| Cisco | 111X Integrated Services Router | - |
| Cisco | 1120 Integrated Services Router | - |
| Cisco | 1160 Integrated Services Router | - |
| Cisco | 4221 Integrated Services Router | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iVendor Advisory
FAQ
What is CVE-2020-3393?
CVE-2020-3393 is a vulnerability with a CVSS score of 6.0 (MEDIUM). A vulnerability in the application-hosting subsystem of Cisco IOS XE Software could allow an authenticated, local attacker to elevate privileges to root on an affected device. The attacker could execu...
How severe is CVE-2020-3393?
CVE-2020-3393 has been rated MEDIUM with a CVSS base score of 6.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3393?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco 1100-4G Integrated Services Router, Cisco 1100-4Gltegb Integrated Services Router, Cisco 1100-4Gltena Integrated Services Router, Cisco 1100-4P Integrated Services Router.