CVE-2023-20051 MEDIUM

CVE-2023-20051: Cisco Packet Data Network Gateway IPsec ICMP Denial of Service Vulnerability

Vendor Cisco
Product Cisco ASR 5000 Series Software
Weakness CWE-400
Published April 5, 2023
Last update October 28, 2024

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the Vector Packet Processor (VPP) of Cisco Packet Data Network Gateway (PGW) could allow an unauthenticated, remote attacker to stop ICMP traffic from being processed over an IPsec connection. This vulnerability is due to the VPP improperly handling a malformed packet. An attacker could exploit this vulnerability by sending a malformed Encapsulating Security Payload (ESP) packet over an IPsec connection. A successful exploit could allow the attacker to stop ICMP traffic over an IPsec connection and cause a denial of service (DoS).

Key dates

02Disclosure timeline

April 5, 2023 CVE published
October 28, 2024 Record updated