Vulnerability Description
A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges and execute arbitrary code on the underlying operating system as the root user. An attacker must be authenticated on an affected device as a PRIV15 user. This vulnerability is due to insufficient file system protection and the presence of a sensitive file in the bootflash directory on an affected device. An attacker could exploit this vulnerability by overwriting an installer file stored in the bootflash directory with arbitrary commands that can be executed with root-level privileges. A successful exploit could allow the attacker to read and write changes to the configuration database on the affected device.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe Sd-Wan | <= 17.3.1a |
| Cisco | 1000 Integrated Services Router | - |
| Cisco | 1100-4G\/6G Integrated Services Router | - |
| Cisco | 1100-4P Integrated Services Router | - |
| Cisco | 1100-8P 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 | 4000 Integrated Services Router | - |
| Cisco | 422 Integrated Services Router | - |
| Cisco | 4221 Integrated Services Router | - |
| Cisco | 4321 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-2021-34724?
CVE-2021-34724 is a vulnerability with a CVSS score of 6.0 (MEDIUM). A vulnerability in the Cisco IOS XE SD-WAN Software CLI could allow an authenticated, local attacker to elevate privileges and execute arbitrary code on the underlying operating system as the root use...
How severe is CVE-2021-34724?
CVE-2021-34724 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-2021-34724?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe Sd-Wan, Cisco 1000 Integrated Services Router, Cisco 1100-4G\/6G Integrated Services Router, Cisco 1100-4P Integrated Services Router, Cisco 1100-8P Integrated Services Router.