CVE-2020-3444
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Cisco Ios Xe
PublishedNov 6, 2020
First seenNov 6, 2020
Weakness typeCWE-20Improper input validation
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cisco ios_xe | v ≤ 16.12.2r, 17.2 ≤ v ≤ 17.2.1 | — |
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