Vulnerabilities > CVE-2018-0476 - Unspecified vulnerability in Cisco IOS XE 15.5(3)S5.1/15.5(3)S6.1/16.6.2

047910
CVSS 5.9 - MEDIUM
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
HIGH
network
high complexity
cisco
nessus
NVD
Published: 2018-10-05
Updated: 2024-11-21

Summary

A vulnerability in the Network Address Translation (NAT) Session Initiation Protocol (SIP) Application Layer Gateway (ALG) of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper processing of SIP packets in transit while NAT is performed on an affected device. An unauthenticated, remote attacker could exploit this vulnerability by sending crafted SIP packets via UDP port 5060 through an affected device that is performing NAT for SIP packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Vulnerable Configurations

Part Description Count
OS
Cisco
3

Nessus

NASL familyCISCO
NASL idCISCO-SA-20180926-SIP-ALG.NASL
descriptionAccording to its self-reported version, the IOS XE is affected by one or more vulnerabilities. Please see the included Cisco BIDs and the Cisco Security Advisory for more information.
last seen2020-04-30
modified2018-10-05
plugin id117954
published2018-10-05
reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/117954
titleCisco IOS XE Software NAT SIP Application Layer Gateway DoS Vulnerability (cisco-sa-20180926-sip-alg)

References