CVE-2018-15398

Cisco Adaptive Security Appliance Access Control List Bypass Vulnerability

Description

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.

Category

4.0
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.41%
Vendor Advisory cisco.com
Affected: Cisco Cisco Adaptive Security Appliance (ASA) Software
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181003-asa-acl-bypass vendor advisory
http://www.securitytracker.com/id/1041788 vdb entry third party advisory
http://www.securityfocus.com/bid/105517 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-15398?
CVE-2018-15398 has been scored as a medium severity vulnerability.
How to fix CVE-2018-15398?
To fix CVE-2018-15398, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-15398 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-15398 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-15398?
CVE-2018-15398 affects Cisco Cisco Adaptive Security Appliance (ASA) Software.
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