CVE-2019-1886
HIGHCisco AsyncOS 10.5-10.5.5-005 - Denial of Service via Malformed SSL Certificate
Title source: llmDescription
A vulnerability in the HTTPS decryption feature of Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Secure Sockets Layer (SSL) server certificates. An attacker could exploit this vulnerability by installing a malformed certificate in a web server and sending a request to it through the Cisco WSA. A successful exploit could allow the attacker to cause an unexpected restart of the proxy process on an affected device.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
x_refsource_cisco
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos
Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/109049
Scores
CVSS v3
8.6
EPSS
0.0135
EPSS Percentile
67.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
CWE-295
Status
published
Products (4)
cisco/asyncos
10.5 - 10.5.5-005
cisco/web_security_appliance
10.5.2-072
cisco/web_security_appliance
10.5.3-025
cisco/web_security_appliance
11.7.0-fcs-334
Published
Jul 04, 2019
Tracked Since
Feb 18, 2026