CVE-2018-0227 evidence review
Cisco Adaptive Security Appliance, adaptive security appliance software, secure firewall threat defense
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 th...
This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.
Identify the product and installed version
Record whether Cisco Adaptive Security Appliance, adaptive security appliance software, secure firewall threat defense is present, where it is installed, and which interfaces are exposed.
- Record the product name, package or appliance identifier, and installed version.
- Identify internet-facing, administrative, API, and internal access paths.
- Preserve the pre-change configuration and relevant service logs.
Compare the affected range
Use the current record as an identification aid: >= Cisco Adaptive Security Appliance, >= 9.4.4 <= 9.4.4.13, >= 9.5.3.7 <= 9.5.3.9, >= 9.6.2.9 <= 9.6.2.21, >= 9.6.3 <= 9.6.3.17, 9.4.3.1, 9.4.3.2, 9.5.2.7, 9.5.2.8, >= 6.0 <= 6.0.1.4, >= 6.1.0 <= 6.1.0.5. Resolve incomplete inventory results before deciding that an asset is unaffected.
Verify the authoritative remediation source
Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.
Operational boundary
This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.