Vulnerability Details : 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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2018-15398
- cpe:2.3:a:cisco:adaptive_security_appliance_software:9.6\(4.3\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.4\(2\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:adaptive_security_appliance_software:9.4\(4\):*:*:*:*:*:*:*
- cpe:2.3:a:cisco:firepower_threat_defense:6.2.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-15398
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-15398
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
4.0
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N |
2.2
|
1.4
|
NIST |
CWE ids for CVE-2018-15398
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2018-15398
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-asa-acl-bypass
Cisco Adaptive Security Appliance Access Control List Bypass VulnerabilityVendor Advisory
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http://www.securitytracker.com/id/1041788
Cisco ASA Lets Remote Users Bypass the Per-User-Override Firewall Feature - SecurityTrackerThird Party Advisory;VDB Entry
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http://www.securityfocus.com/bid/105517
Cisco Adaptive Security Appliance CVE-2018-15398 Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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