CVE-2019-1817

Cisco Web Security Appliance Malformed Request Denial of Service Vulnerability

State: Published
Severity: 8.6 High
Published: May 3, 2019
Updated: Nov 19, 2024
Reserved: Dec 6, 2018

Description

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.

Scores

CVSS	Score	Vector	Source
3.0	8.6 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	cisco

Weaknesses

CWE-20

Affected Products

Product	Versions
Cisco Web Security Appliance (WSA)Cisco	before 11.5.2-020Affected before 11.7.0-406Affected

References

20190501 Cisco Web Security Appliance Malformed Request Denial of Service Vulnerabilityvendor-advisory

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