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CVE-2019-1886

Cisco Web Security Appliance HTTPS Certificate Denial of Service Vulnerability

Published: Jul 4, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-20
8.6HIGH
NVD MITRE
EPSS Score
1.3%
Top 31.2%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20CWE-295

Affected Products

Cisco Systems Inc.
commercial·USaka Cisco, cisco systems
Cisco Web Security Appliance (WSA)
Networking Infrastructure
asyncos
Networking Infrastructure
web security appliance
Networking Infrastructure
Cisco Web Security Appliance
Networking Infrastructure

Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Initial Access
View detailed technique mapping

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-wsa-dos
tools.cisco.com
http://www.securityfocus.com/bid/109049
securityfocus.com
https://tools.cisco.com/security/center/publicationListing.x
tools.cisco.com

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