Vulnerability identifier: #VU31694

Vulnerability risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3385

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
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

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to cause a denial of service (DoS) condition on an affected system. 

The vulnerability exists due to insufficient validation of user-supplied input in the deep packet inspection (DPI) engine. A remote attacker on the local network can send specially crafted packets and cause a denial of service condition on the target system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco SD-WAN vEdge 5000 Series Routers: 18.3.0 - 20.1.0

Cisco SD-WAN vEdge Cloud Router: 18.3.0 - 20.1.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vedgfpdos-PkqQrnwV

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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