CVE-2019-1884 HIGH

CVE-2019-1884: Cisco Web Security Appliance Web Proxy Denial of Service Vulnerability

Vendor Cisco
Product Cisco Web Security Appliance (WSA)
Weakness CWE-20 · Input validation
Published July 4, 2019
Last update November 21, 2024

CVSS base score

7.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation mechanisms for certain fields in HTTP/HTTPS requests sent through an affected device. A successful attacker could exploit this vulnerability by sending a malicious HTTP/HTTPS request through an affected device. An exploit could allow the attacker to force the device to stop processing traffic, resulting in a DoS condition.

Key dates

02Disclosure timeline

July 4, 2019 CVE published
November 21, 2024 Record updated