CVE-2019-1884: A vulnerability in the web proxy functionality of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an authenticated, remote attacker…

PriorityP335medium6.5CVSS 3.0

AVNACLPRLUINSUCNINAH

EPSS

1.51%

71.8th percentile

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.

Affected

9 ranges

Vendor	Product	Version range	Fixed in
cisco	asyncos	>= 10.1 < 10.5.5-005	10.5.5-005
cisco	asyncos	>= 11.5 < 11.5.2-020	11.5.2-020
cisco	asyncos	>= 11.7 < 11.7.0-407	11.7.0-407
cisco	cisco_web_security_appliance	>= unspecified < 10.5.5-005	10.5.5-005
cisco	web_security_appliance	—	—
cisco	web_security_appliance	—	—
cisco	web_security_appliance	—	—
cisco	web_security_appliance	—	—
cisco	web_security_appliance_web_proxy	—	—

CVSS provenance

nvdv3.06.5MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P

vendor_cisco7.7HIGH

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