Vulnerability identifier: #VU31691

Vulnerability risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3351

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco SD-WAN vBond Orchestrator
Other software / Other software solutions
Cisco SD-WAN vManage
Other software / Other software solutions
Cisco SD-WAN vEdge 100 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 1000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 2000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge 5000 Series Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vEdge Cloud Router
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vSmart Controller
Hardware solutions / Other hardware appliances

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper validation of fields in Cisco SD-WAN peering messages that are encapsulated in UDP packets. A remote attacker can send specially crafted UDP messages and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco SD-WAN vBond Orchestrator: All versions

Cisco SD-WAN vEdge 100 Series Routers: All versions

Cisco SD-WAN vEdge 1000 Series Routers: All versions

Cisco SD-WAN vEdge 2000 Series Routers: All versions

Cisco SD-WAN vEdge 5000 Series Routers: All versions

Cisco SD-WAN vEdge Cloud Router: All versions

Cisco SD-WAN vManage: All versions

Cisco SD-WAN vSmart Controller: All versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-dos-KWOdyHnB

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.