CVE-2021-40128: cisco cisco webex meetings Permissive List of Allowed Inputs

Vulnerability summary

CVE-2021-40128 is a medium (CVSS 5.3) Permissive List of Allowed Inputs vulnerability in cisco cisco webex meetings. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 61.8% of scored vulnerabilities.

Timeline

1. 04-11-2021
   PublishedVulnerability first disclosed.
2. 07-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the account activation feature of Cisco Webex Meetings could allow an unauthenticated, remote attacker to send an account activation email with an activation link that points to an arbitrary domain. This vulnerability is due to insufficient validation of user-supplied parameters. An attacker could exploit this vulnerability by sending a crafted HTTP request to the account activation page of Cisco Webex Meetings. A successful exploit could allow the attacker to send to any recipient an account activation email that contains a tampered activation link, which could direct the user to an attacker-controlled website.

• CWE-183Permissive List of Allowed InputsThe product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are explicitly allowed by policy because the inputs are assumed to be safe, but the list is too permissive - that is, it allows an input that is unsafe, leading to resultant weaknesses.