CVE-2019-1817CWE-20

Cisco Web Security Appliance Malformed Request Denial of Service Vulnerability

High · published May 3, 2019

CVSS v3.0
8.6
EPSS
2%
Percentile
77.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
8.6 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.01772 · 77.8th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2019-05-03T16:30Z
EPSS history
Timeline
  • 03 MAY 16:30Z
    Cisco Web Security Appliance Malformed Request Denial of Service Vulnerability
    cvelistv5