Vulnerability Description
A vulnerability in the multicast DNS (mDNS) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of mDNS packets. An attacker could exploit this vulnerability by sending a crafted mDNS packet to an affected device. A successful exploit could cause a device to reload, resulting in a DoS condition.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xe | 16.12.1 |
| Cisco | 2610Xm | - |
| Cisco | 2611Xm | - |
| Cisco | 2612 | - |
| Cisco | 2620Xm | - |
| Cisco | 2621Xm | - |
| Cisco | 2650Xm | - |
| Cisco | 2651Xm | - |
| Cisco | 2691 | - |
| 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-mVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mVendor Advisory
FAQ
What is CVE-2020-3359?
CVE-2020-3359 is a vulnerability with a CVSS score of 8.6 (HIGH). A vulnerability in the multicast DNS (mDNS) feature of Cisco IOS XE Software for Cisco Catalyst 9800 Series Wireless Controllers could allow an unauthenticated, remote attacker to cause a denial of se...
How severe is CVE-2020-3359?
CVE-2020-3359 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-3359?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xe, Cisco 2610Xm, Cisco 2611Xm, Cisco 2612, Cisco 2620Xm.