CVE-2020-3351: Cisco SD-WAN Solution Software Denial of Service Vulnerability
First published: Thu Jul 16 2020(Updated: )
A vulnerability in Cisco SD-WAN Solution Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper validation of fields in Cisco SD-WAN peering messages that are encapsulated in UDP packets. An attacker could exploit this vulnerability by sending crafted UDP messages to the targeted system. A successful exploit could allow the attacker to cause services on the device to fail, resulting in a DoS condition that could impact the targeted device and other devices that depend on it.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Sd-wan Firmware | <17.2.7 | |
| Cisco Sd-wan Firmware | >=17.2.8<18.3.0 | |
| Cisco Vedge 100 | ||
| Cisco Vedge 1000 | ||
| Cisco Vedge 100b | ||
| Cisco Vedge 100m | ||
| Cisco Vedge 100wm | ||
| Cisco Vedge 2000 | ||
| Cisco Vedge 5000 | ||
| Cisco Vedge Cloud Router | ||
| Cisco Vsmart Controller |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Cisco SD-WAN Solution Software vulnerability?
The vulnerability ID for this Cisco SD-WAN Solution Software vulnerability is CVE-2020-3351.
What is the severity of CVE-2020-3351?
CVE-2020-3351 has a severity rating of 8.6 (high).
How does CVE-2020-3351 allow an attacker to cause a denial of service (DoS) condition?
CVE-2020-3351 allows an unauthenticated remote attacker to cause a DoS condition by exploiting improper validation of fields in Cisco SD-WAN peering messages encapsulated in UDP packets.
What software versions are affected by CVE-2020-3351?
Cisco SD-WAN Solution Software with versions up to 17.2.7 and between 17.2.8 to 18.3.0 are affected by CVE-2020-3351.
How can I fix CVE-2020-3351?
To fix CVE-2020-3351, it is recommended to upgrade to a version of Cisco SD-WAN Solution Software that is not vulnerable.
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- agent/weakness
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- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/author
- agent/references
- agent/last-modified-date
- agent/tags
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- agent/first-publish-date
- agent/event
- vendor/cisco
- canonical/cisco sd-wan firmware
- version/cisco sd-wan firmware/17.2.8
- canonical/cisco vedge 100
- canonical/cisco vedge 1000
- canonical/cisco vedge 100b
- canonical/cisco vedge 100m
- canonical/cisco vedge 100wm
- canonical/cisco vedge 2000
- canonical/cisco vedge 5000
- canonical/cisco vedge cloud router
- canonical/cisco vsmart controller