CVE-2020-3444

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cedge-filt-bypass-Y6wZMqm4

Details

Source: MITRE

Published: 2020-11-06

Updated: 2020-11-20

Type: CWE-20

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:cisco:ios_xe:*:*:*:*:*:*:*:* versions up to 16.12.2r (inclusive)

cpe:2.3:a:cisco:ios_xe:*:*:*:*:*:*:*:* versions from 17.2.0 to 17.2.1 (inclusive)

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
143155Cisco IOS XE SD-WAN Software Packet Filtering Bypass (cisco-sa-cedge-filt-bypass-Y6wZMqm4)NessusCISCO
high
143154Cisco IOS XE Software Packet Filtering Bypass (cisco-sa-cedge-filt-bypass-Y6wZMqm4)NessusCISCO
high