CVE-2018-15454

Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software Denial of Service Vulnerability

Description

A vulnerability in the Session Initiation Protocol (SIP) inspection engine of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause an affected device to reload or trigger high CPU, resulting in a denial of service (DoS) condition. The vulnerability is due to improper handling of SIP traffic. An attacker could exploit this vulnerability by sending SIP requests designed to specifically trigger this issue at a high rate across an affected device. Software updates that address this vulnerability are not yet available.

Category

8.6
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 3.90% Top 15%
Vendor Advisory cisco.com
Affected: Cisco Cisco Adaptive Security Appliance (ASA) Software
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/105768 vdb entry third party advisory
http://www.securitytracker.com/id/1042129 vdb entry third party advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181031-asaftd-sip-dos vendor advisory mitigation

Frequently Asked Questions

What is the severity of CVE-2018-15454?
CVE-2018-15454 has been scored as a high severity vulnerability.
How to fix CVE-2018-15454?
To fix CVE-2018-15454, 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-2018-15454 being actively exploited in the wild?
It is possible that CVE-2018-15454 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-15454?
CVE-2018-15454 affects Cisco Cisco Adaptive Security Appliance (ASA) Software.
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