8.6
CWE
20
Advisory Published
Updated

CVE-2019-1751: Cisco IOS Software NAT64 Denial of Service Vulnerability

First published: Thu Mar 28 2019(Updated: )

A vulnerability in the Network Address Translation 64 (NAT64) functions of Cisco IOS Software could allow an unauthenticated, remote attacker to cause either an interface queue wedge or a device reload. The vulnerability is due to the incorrect handling of certain IPv4 packet streams that are sent through the device. An attacker could exploit this vulnerability by sending specific IPv4 packet streams through the device. An exploit could allow the attacker to either cause an interface queue wedge or a device reload, resulting in a denial of service (DoS) condition.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS=15.4\(1\)cg1
Cisco IOS=15.4\(1\)t
Cisco IOS=15.4\(1\)t1
Cisco IOS=15.4\(1\)t2
Cisco IOS=15.4\(1\)t3
Cisco IOS=15.4\(1\)t4
Cisco IOS=15.4\(2\)t
Cisco IOS=15.4\(2\)t1
Cisco IOS=15.4\(2\)t2
Cisco IOS=15.4\(2\)t3
Cisco IOS=15.4\(2\)t4
Cisco IOS=15.4\(3\)m
Cisco IOS=15.4\(3\)m1
Cisco IOS=15.4\(3\)m2
Cisco IOS=15.4\(3\)m3
Cisco IOS=15.4\(3\)m4
Cisco IOS=15.4\(3\)m5
Cisco IOS=15.4\(3\)m6
Cisco IOS=15.4\(3\)m6a
Cisco IOS=15.4\(3\)m7
Cisco IOS=15.4\(3\)m7a
Cisco IOS=15.4\(3\)m8
Cisco IOS=15.4\(3\)m9
Cisco IOS=15.4\(3\)m10
Cisco IOS=15.5\(1\)t
Cisco IOS=15.5\(1\)t1
Cisco IOS=15.5\(1\)t2
Cisco IOS=15.5\(1\)t3
Cisco IOS=15.5\(1\)t4
Cisco IOS=15.5\(2\)t
Cisco IOS=15.5\(2\)t1
Cisco IOS=15.5\(2\)t2
Cisco IOS=15.5\(2\)t3
Cisco IOS=15.5\(2\)t4
Cisco IOS=15.5\(2\)xb
Cisco IOS=15.5\(3\)m
Cisco IOS=15.5\(3\)m0a
Cisco IOS=15.5\(3\)m1
Cisco IOS=15.5\(3\)m2
Cisco IOS=15.5\(3\)m2a
Cisco IOS=15.5\(3\)m3
Cisco IOS=15.5\(3\)m4
Cisco IOS=15.5\(3\)m4a
Cisco IOS=15.5\(3\)m4b
Cisco IOS=15.5\(3\)m4c
Cisco IOS=15.5\(3\)m5
Cisco IOS=15.5\(3\)m5a
Cisco IOS=15.5\(3\)m6
Cisco IOS=15.5\(3\)m6a
Cisco IOS=15.5\(3\)m7
Cisco IOS=15.5\(3\)m8
Cisco IOS=15.6\(1\)t
Cisco IOS=15.6\(1\)t0a
Cisco IOS=15.6\(1\)t1
Cisco IOS=15.6\(1\)t2
Cisco IOS=15.6\(1\)t3
Cisco IOS=15.6\(2\)t
Cisco IOS=15.6\(2\)t0a
Cisco IOS=15.6\(2\)t1
Cisco IOS=15.6\(2\)t2
Cisco IOS=15.6\(2\)t3
Cisco IOS=15.6\(3\)m
Cisco IOS=15.6\(3\)m0a
Cisco IOS=15.6\(3\)m1
Cisco IOS=15.6\(3\)m1a
Cisco IOS=15.6\(3\)m1b
Cisco IOS=15.6\(3\)m2
Cisco IOS=15.6\(3\)m2a
Cisco IOS=15.6\(3\)m3
Cisco IOS=15.6\(3\)m3a
Cisco IOS=15.6\(3\)m4
Cisco IOS=15.6\(3\)m5
Cisco IOS=15.7\(3\)m
Cisco IOS=15.7\(3\)m0a
Cisco IOS=15.7\(3\)m1
Cisco IOS=15.7\(3\)m2
Cisco IOS=15.7\(3\)m3
Cisco IOS=15.8\(3\)m
Cisco IOS=15.8\(3\)m0a
Cisco IOS=15.8\(3\)m0b
=15.4\(1\)cg1
=15.4\(1\)t
=15.4\(1\)t1
=15.4\(1\)t2
=15.4\(1\)t3
=15.4\(1\)t4
=15.4\(2\)t
=15.4\(2\)t1
=15.4\(2\)t2
=15.4\(2\)t3
=15.4\(2\)t4
=15.4\(3\)m
=15.4\(3\)m1
=15.4\(3\)m2
=15.4\(3\)m3
=15.4\(3\)m4
=15.4\(3\)m5
=15.4\(3\)m6
=15.4\(3\)m6a
=15.4\(3\)m7
=15.4\(3\)m7a
=15.4\(3\)m8
=15.4\(3\)m9
=15.4\(3\)m10
=15.5\(1\)t
=15.5\(1\)t1
=15.5\(1\)t2
=15.5\(1\)t3
=15.5\(1\)t4
=15.5\(2\)t
=15.5\(2\)t1
=15.5\(2\)t2
=15.5\(2\)t3
=15.5\(2\)t4
=15.5\(2\)xb
=15.5\(3\)m
=15.5\(3\)m0a
=15.5\(3\)m1
=15.5\(3\)m2
=15.5\(3\)m2a
=15.5\(3\)m3
=15.5\(3\)m4
=15.5\(3\)m4a
=15.5\(3\)m4b
=15.5\(3\)m4c
=15.5\(3\)m5
=15.5\(3\)m5a
=15.5\(3\)m6
=15.5\(3\)m6a
=15.5\(3\)m7
=15.5\(3\)m8
=15.6\(1\)t
=15.6\(1\)t0a
=15.6\(1\)t1
=15.6\(1\)t2
=15.6\(1\)t3
=15.6\(2\)t
=15.6\(2\)t0a
=15.6\(2\)t1
=15.6\(2\)t2
=15.6\(2\)t3
=15.6\(3\)m
=15.6\(3\)m0a
=15.6\(3\)m1
=15.6\(3\)m1a
=15.6\(3\)m1b
=15.6\(3\)m2
=15.6\(3\)m2a
=15.6\(3\)m3
=15.6\(3\)m3a
=15.6\(3\)m4
=15.6\(3\)m5
=15.7\(3\)m
=15.7\(3\)m0a
=15.7\(3\)m1
=15.7\(3\)m2
=15.7\(3\)m3
=15.8\(3\)m
=15.8\(3\)m0a
=15.8\(3\)m0b

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