Vulnerability Description
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 device. The vulnerability is due to insufficient protection of values passed to a script that executes during device startup. An attacker could exploit this vulnerability by writing values to a specific file. A successful exploit could allow the attacker to execute commands with root privileges each time the affected device is restarted.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | 17.2.1 |
| Cisco | Catalyst 9800-40 | - |
| Cisco | Catalyst 9800-80 | - |
| Cisco | Catalyst 9800-Cl | - |
| Cisco | Catalyst 9800-L | - |
| Cisco | Catalyst 9800-L-C | - |
| Cisco | Catalyst 9800-L-F | - |
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-2020-3403?
CVE-2020-3403 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2020-3403?
CVE-2020-3403 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3403?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco Catalyst 9800-40, Cisco Catalyst 9800-80, Cisco Catalyst 9800-Cl, Cisco Catalyst 9800-L.