CVE-2020-3369: Cisco SD-WAN vEdge Routers Denial of Service Vulnerability
First published: Thu Jul 16 2020(Updated: )
A vulnerability in the deep packet inspection (DPI) engine of Cisco SD-WAN vEdge Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper processing of FTP traffic. An attacker could exploit this vulnerability by sending crafted FTP packets through an affected device. A successful exploit could allow the attacker to make the device reboot continuously, causing a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Sd-wan Firmware | =19.2.0 | |
| Cisco Sd-wan Firmware | =19.2.1 | |
| Cisco Sd-wan Firmware | =19.2.097 | |
| Cisco Sd-wan Firmware | =19.2.098 | |
| Cisco Vedge 5000 | ||
| Cisco Vedge Cloud Router |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID of this Cisco SD-WAN vEdge Routers vulnerability?
The vulnerability ID of this Cisco SD-WAN vEdge Routers vulnerability is CVE-2020-3369.
What is the severity level of CVE-2020-3369?
The severity level of CVE-2020-3369 is high, with a CVSS score of 7.5.
How does this vulnerability affect the Cisco SD-WAN vEdge Routers?
This vulnerability could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
What is the cause of the vulnerability in the Cisco SD-WAN vEdge Routers?
The vulnerability is due to the improper processing of FTP traffic in the deep packet inspection (DPI) engine of the routers.
Are there any fixes available for this vulnerability?
Yes, Cisco has released a software update to address this vulnerability. Please refer to the Cisco Security Advisory for more information.
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- version/cisco sd-wan firmware/19.2.0
- version/cisco sd-wan firmware/19.2.1
- version/cisco sd-wan firmware/19.2.097
- version/cisco sd-wan firmware/19.2.098
- canonical/cisco vedge 5000
- canonical/cisco vedge cloud router