#VU28763 Insufficient verification of data authenticity in Cisco IOS XE - CVE-2020-3220

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU28763

#VU28763 Insufficient verification of data authenticity in Cisco IOS XE - CVE-2020-3220

Published: June 5, 2020


Vulnerability identifier: #VU28763
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-3220
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XE
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to disconnect legitimate IPsec VPN sessions to an affected device.

The vulnerability exists due to insufficient verification of authenticity of received Encapsulating Security Payload (ESP) packets. A remote attacker can tamper with ESP cleartext values as a man-in-the-middle and disconnect legitimate IPsec VPN sessions to an affected device.

This vulnerability affects the following products if they are running affected release of Cisco IOS XE Software: 

  • Cisco ASR 1000 Series Aggregation Services Routers 
  • Cisco Cloud Services Router 1000V Series 
  • Cisco 4000 Series Integrated Services Routers 
  • Cisco 1000 Series Integrated Services Routers


Remediation

Install updates from vendor's website.

External links