Vulnerability · Published Nov 6, 2020 · Assigned by cisco

CVE-2020-3444Cisco SD-WAN Software Packet Filtering Bypass Vulnerability

Medium 5.8

In plain English

A medium-severity improper input validation in Cisco SD-WAN Solution from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).

Severity (CVSS 3.0)5.8Medium

Exploit odds (30 days)1.5%top 25.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in the packet filtering features of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to bypass L3 and L4 traffic filters. The vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by crafting a malicious TCP packet with specific characteristics and sending it to a targeted device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet into the network.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco SD-WAN Solution	n/a

Weakness: CWE-20 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

References

20201104 Cisco SD-WAN Software Packet Filtering Bypass Vulnerability vendor-advisory, x_refsource_CISCO