Main Vulnerability Database Vulnerabilities #VU48163

Input validation error in Cisco IOS XE and Cisco IOS XE SD-WAN - CVE-2020-3444

Published: November 5, 2020

Vulnerability identifier: #VU48163

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-3444

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass L3 and L4 traffic filters.

The vulnerability exists due to improper traffic filtering conditions on an affected device. A remote attacker can send a specially crafted TCP packet, bypass the L3 and L4 traffic filters and inject an arbitrary packet into the network.

Affected software

Cisco IOS XE
Cisco IOS XE SD-WAN

How to mitigate CVE-2020-3444

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

External References

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

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