Vulnerability in Cisco Adaptive Security Appliance Software
CVE-2018-15398
A vulnerability in the per-user-override feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass an access control list (ACL) that is configured for an interface of an affected device. The vulnerability is due to errors that could occur when the affected software constructs and applies per-user-override rules. An attacker could exploit this vulnerability by connecting to a network through an affected device that has a vulnerable configuration. A successful exploit could allow the attacker to access resources that are behind the affected device and would typically be protected by the interface ACL.
EPSS: 0.019 (77.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Cisco Adaptive_security_appliance_software — versions 9.6\(4.3\), 9.4\(2\), 9.4\(4\)
- Cisco Adaptive Security Appliance (Asa) Software — versions n/a
- Cisco Firepower_threat_defense — versions 6.2.0
- Cisco Secure_firewall_threat_defense — versions 6.2.0
Weakness classification (CWE)
References
- psirt@cisco.com (x_refsource_CISCO, vendor-advisory, Vendor Advisory)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
Frequently asked questions
- What is CVE-2018-15398?
- CVE-2018-15398 is a medium-severity vulnerability in Cisco Adaptive Security Appliance Software, classified under Improper Access Control. CVSS score: 4.0/10. Published 2018-10-05.
- How severe is CVE-2018-15398?
- Medium severity. CVSS v3 base score is 4.0 out of 10.