PT-2018-8688 · Cisco · Firepower Threat Defense+1

Published 2018-04-18 · Updated 2022-06-27 · CVE-2018-0227

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions: Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software (affected versions not specified)

Description: A vulnerability in the Secure Sockets Layer (SSL) Virtual Private Network (VPN) Client Certificate Authentication feature could allow an unauthenticated, remote attacker to establish an SSL VPN connection and bypass certain SSL certificate verification steps. The vulnerability is due to incorrect verification of the SSL Client Certificate. An attacker could exploit this vulnerability by connecting to the ASA VPN without a proper private key and certificate pair. A successful exploit could allow the attacker to establish an SSL VPN connection to the ASA when the connection should have been rejected.

Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Certificate Validation

Weakness Enumeration

CWE-295

Related Identifiers

CVE-2018-0227

Affected Products

Cisco Asa

Firepower Threat Defense

References · 7

• https://osv.dev/vulnerability/CVE-2018-0227 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-0227 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa1 · Vendor Advisory
• https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01 · Note
• http://securityfocus.com/bid/104018 · Note
• https://t.me/cvenotify/32233 · Telegram Post
• http://securitytracker.com/id/1040723 · Note