CVE-2021-1403 HIGH

CVE-2021-1403: Cisco IOS XE Software Web UI Cross-Site WebSocket Hijacking Vulnerability

Vendor Cisco
Product Cisco IOS XE Software
Weakness CWE-345
Published March 24, 2021
Last update November 8, 2024

CVSS base score

7.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A vulnerability in the web UI feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to conduct a cross-site WebSocket hijacking (CSWSH) attack and cause a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient HTTP protections in the web UI on an affected device. An attacker could exploit this vulnerability by persuading an authenticated user of the web UI to follow a crafted link. A successful exploit could allow the attacker to corrupt memory on the affected device, forcing it to reload and causing a DoS condition.

Key dates

02Disclosure timeline

March 24, 2021 CVE published
November 8, 2024 Record updated