CVE-2018-0476

Cisco IOS XE Software NAT Session Initiation Protocol Application Layer Gateway Denial of Service Vulnerability

N/A
Published: October 5, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:30 AM UTC
1 product affected across 1 vendorIOS Xe

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Severity
N/A
Exploit prediction
EPSS 14%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/105419
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1041734
VDB Entryx_refsource_SECTRACKThird Party Advisory
http://www.securitytracker.com/id/1041737

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Confidentiality
NONE
Integrity
NONE
Availability
COMPLETE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-399NVD-CWE-noinfo

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