VULNERABILITY

Cisco XE: CVE-2020-3220: Cisco IOS XE Software IPsec VPN Denial of Service Vulnerability

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Cisco XE: CVE-2020-3220: Cisco IOS XE Software IPsec VPN Denial of Service Vulnerability

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
06/03/2020
Created
06/16/2020
Added
06/16/2020
Modified
04/08/2024

Description

A vulnerability in the hardware crypto driver of Cisco IOS XE Software for Cisco 4300 Series Integrated Services Routers and Cisco Catalyst 9800-L Wireless Controllers could allow an unauthenticated, remote attacker to disconnect legitimate IPsec VPN sessions to an affected device. The vulnerability is due to insufficient verification of authenticity of received Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by tampering with ESP cleartext values as a man-in-the-middle.

Solution(s)

  • cisco-xe-upgrade-latest

References

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