CVE-2018-15454

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.

CvssV3 impact

BaseSeverity

HIGH

ConfidentialityImpact

NONE

AttackComplexity

LOW

Scope

CHANGED

AttackVector

NETWORK

AvailabilityImpact

HIGH

IntegrityImpact

NONE

PrivilegesRequired

NONE

BaseScore

8.6

VectorString

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Version

3.0

UserInteraction

NONE

CvssV2 impact

Version

2.0

VectorString

AV:N/AC:L/Au:N/C:N/I:N/A:C

AccessVector

NETWORK

AccessComplexity

LOW

Authentication

NONE

ConfidentialityImpact

NONE

IntegrityImpact

NONE

AvailabilityImpact

COMPLETE

BaseScore

7.800000190734863