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Cisco XE: CVE-2018-0476: Cisco IOS XE Software NAT Session Initiation Protocol Application Layer Gateway Denial of Service Vulnerability

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Cisco XE: CVE-2018-0476: Cisco IOS XE Software NAT Session Initiation Protocol Application Layer Gateway Denial of Service Vulnerability

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
10/05/2018
Created
08/02/2019
Added
07/30/2019
Modified
11/13/2023

Description

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.

Solution(s)

  • cisco-xe-upgrade-latest

References

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