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Vulnerability Details : CVE-2018-0227

A vulnerability in the Secure Sockets Layer (SSL) Virtual Private Network (VPN) Client Certificate Authentication feature for Cisco Adaptive Security Appliance (ASA) 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. This vulnerability affects Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) Software that is running on the following Cisco products: 3000 Series Industrial Security Appliances (ISA), ASA 5500 Series Adaptive Security Appliances, ASA 5500-X Series Next-Generation Firewalls, ASA Services Module for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers, Adaptive Security Virtual Appliances (ASAv), Firepower 4110 Security Appliances, Firepower 9300 ASA Security Modules. Cisco Bug IDs: CSCvg40155.
Publish Date : 2018-04-19 Last Update Date : 2019-10-09
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 295

- Products Affected By CVE-2018-0227

# Product Type Vendor Product Version Update Edition Language
1 OS Cisco Adaptive Security Appliance Software * * * * Version Details Vulnerabilities
2 OS Cisco Adaptive Security Appliance Software 9.4.3.1 * * * Version Details Vulnerabilities
3 OS Cisco Adaptive Security Appliance Software 9.4.3.2 * * * Version Details Vulnerabilities
4 OS Cisco Adaptive Security Appliance Software 9.5.2.7 * * * Version Details Vulnerabilities
5 OS Cisco Adaptive Security Appliance Software 9.5.2.8 * * * Version Details Vulnerabilities
6 Application Cisco Firepower Threat Defense * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Cisco Adaptive Security Appliance Software 5
Cisco Firepower Threat Defense 1

- References For CVE-2018-0227

http://www.securitytracker.com/id/1040723
SECTRACK 1040723
http://www.securityfocus.com/bid/104018
BID 104018 Multiple Cisco Products CVE-2018-0227 SSL Certificate Validation Security Bypass Vulnerability Release Date:2018-07-04
https://ics-cert.us-cert.gov/advisories/ICSA-18-184-01
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asa1 CONFIRM

- Metasploit Modules Related To CVE-2018-0227

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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