CVE-2020-3500 MEDIUM

CVE-2020-3500: Cisco StarOS IPv6 Denial of Service Vulnerability

Vendor Cisco
Product Cisco ASR 5000 Series Software
Weakness CWE-119
Published August 17, 2020
Last update November 13, 2024

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the IPv6 implementation of Cisco StarOS could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to an affected device with the goal of reaching the vulnerable section of the input buffer. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.

Key dates

02Disclosure timeline

August 17, 2020 CVE published
November 13, 2024 Record updated