CVE-2019-1817 HIGH

CVE-2019-1817: Cisco Web Security Appliance Malformed Request Denial of Service Vulnerability

Vendor Cisco
Product Cisco Web Security Appliance (WSA)
Weakness CWE-20 · Input validation
Published May 3, 2019
Last update November 19, 2024
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/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 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper validation of HTTP and HTTPS requests. An attacker could exploit this vulnerability by sending a malformed HTTP or HTTPS request to an affected device. An exploit could allow the attacker to cause a restart of the web proxy process, resulting in a temporary DoS condition.

Key dates

02Disclosure timeline

May 3, 2019 CVE published
November 19, 2024 Record updated