high
8.6
CWE
20
Advisory Published
Updated

CVE-2019-1740: Cisco IOS and IOS XE Software Network-Based Application Recognition Denial of Service Vulnerabilities

First published: Wed Mar 27 2019(Updated: )

A vulnerability in the Network-Based Application Recognition (NBAR) feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. This vulnerability are due to a parsing issue on DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through routers that are running an affected version and have NBAR enabled. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

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

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE=3.2.0ja
Cisco IOS XE=3.16.0as
Cisco IOS XE=3.16.0bs
Cisco IOS XE=3.16.0cs
Cisco IOS XE=3.16.0s
Cisco IOS XE=3.16.1as
Cisco IOS XE=3.16.1s
Cisco IOS XE=3.16.2as
Cisco IOS XE=3.16.2bs
Cisco IOS XE=3.16.2s
Cisco IOS XE=3.16.3as
Cisco IOS XE=3.16.3s
Cisco IOS XE=3.16.4as
Cisco IOS XE=3.16.4bs
Cisco IOS XE=3.16.4cs
Cisco IOS XE=3.16.4ds
Cisco IOS XE=3.16.4es
Cisco IOS XE=3.16.4gs
Cisco IOS XE=3.16.4s
Cisco IOS XE=3.16.5as
Cisco IOS XE=3.16.5s
Cisco IOS XE=3.17.0s
Cisco IOS XE=3.17.1as
Cisco IOS XE=3.17.1s
Cisco IOS XE=3.17.2s
Cisco IOS XE=3.17.3s
Cisco IOS XE=3.17.4s
Cisco IOS XE=3.18.0as
Cisco IOS XE=3.18.0s
Cisco IOS XE=3.18.0sp
Cisco IOS XE=3.18.1asp
Cisco IOS XE=3.18.1bsp
Cisco IOS XE=3.18.1csp
Cisco IOS XE=3.18.1gsp
Cisco IOS XE=3.18.1hsp
Cisco IOS XE=3.18.1isp
Cisco IOS XE=3.18.1s
Cisco IOS XE=3.18.1sp
Cisco IOS XE=3.18.2asp
Cisco IOS XE=3.18.2s
Cisco IOS XE=3.18.2sp
Cisco IOS XE=3.18.3s
Cisco IOS XE=3.18.4s
Cisco IOS XE=16.2.1
Cisco IOS XE=16.2.2
Cisco IOS XE=16.3.1
Cisco IOS XE=16.3.1a
Cisco IOS XE=16.3.2
Cisco IOS XE=16.3.3
Cisco IOS XE=16.3.4
Cisco IOS XE=16.4.1
Cisco IOS XE=16.4.2
Cisco IOS XE=16.4.3
Cisco IOS XE=16.5.1
Cisco IOS XE=16.5.1a
Cisco IOS XE=16.5.1b
Cisco IOS XE=16.9.3s
Cisco IOS XE=16.9.4c
Cisco IOS=15.3\(3\)jd
Cisco IOS=15.3\(3\)jd2
Cisco IOS=15.3\(3\)jd3
Cisco IOS=15.3\(3\)jd4
Cisco IOS=15.3\(3\)jd5
Cisco IOS=15.3\(3\)jd6
Cisco IOS=15.3\(3\)jd7
Cisco IOS=15.3\(3\)jd8
Cisco IOS=15.3\(3\)jd9
Cisco IOS=15.3\(3\)jd11
Cisco IOS=15.3\(3\)jd12
Cisco IOS=15.3\(3\)jd13
Cisco IOS=15.3\(3\)jd14
Cisco IOS=15.3\(3\)je
Cisco IOS=15.3\(3\)jf
Cisco IOS=15.3\(3\)jf1
Cisco IOS=15.3\(3\)jf2
Cisco IOS=15.3\(3\)jf4
Cisco IOS=15.3\(3\)jf5
Cisco IOS=15.3\(3\)jg
Cisco IOS=15.3\(3\)jg1
Cisco IOS=15.3\(3\)jh
Cisco IOS=15.3\(3\)jk6
Cisco IOS=15.3\(3\)jnp
Cisco IOS=15.3\(3\)jnp1
Cisco IOS=15.3\(3\)jnp3
Cisco IOS=15.3\(3\)jpb
Cisco IOS=15.3\(3\)jpb1
Cisco IOS=15.3\(3\)jpc
Cisco IOS=15.3\(3\)jpc1
Cisco IOS=15.3\(3\)jpc2
Cisco IOS=15.3\(3\)jpc3
Cisco IOS=15.3\(3\)jpc5
Cisco IOS=15.3\(3\)jpd
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\(3\)s
Cisco IOS=15.5\(3\)s0a
Cisco IOS=15.5\(3\)s1
Cisco IOS=15.5\(3\)s1a
Cisco IOS=15.5\(3\)s2
Cisco IOS=15.5\(3\)s3
Cisco IOS=15.5\(3\)s4
Cisco IOS=15.5\(3\)s5
Cisco IOS=15.5\(3\)sn
Cisco IOS=15.5\(3\)sn0a
Cisco IOS=15.6\(1\)s
Cisco IOS=15.6\(1\)s1
Cisco IOS=15.6\(1\)s2
Cisco IOS=15.6\(1\)s3
Cisco IOS=15.6\(1\)s4
Cisco IOS=15.6\(1\)sn
Cisco IOS=15.6\(1\)sn1
Cisco IOS=15.6\(1\)sn2
Cisco IOS=15.6\(1\)sn3
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\(2\)s
Cisco IOS=15.6\(2\)s1
Cisco IOS=15.6\(2\)s2
Cisco IOS=15.6\(2\)s3
Cisco IOS=15.6\(2\)s4
Cisco IOS=15.6\(2\)sn
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\(3\)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\(3\)sn
Cisco IOS=15.6\(4\)sn
Cisco IOS=15.6\(5\)sn
Cisco IOS=15.6\(6\)sn
Cisco IOS=15.6\(7\)sn
Cisco IOS=15.6\(7\)sn1
Cisco IOS=15.6\(7\)sn2
Cisco IOS=15.6\(7\)sn3
=3.2.0ja
=3.16.0as
=3.16.0bs
=3.16.0cs
=3.16.0s
=3.16.1as
=3.16.1s
=3.16.2as
=3.16.2bs
=3.16.2s
=3.16.3as
=3.16.3s
=3.16.4as
=3.16.4bs
=3.16.4cs
=3.16.4ds
=3.16.4es
=3.16.4gs
=3.16.4s
=3.16.5as
=3.16.5s
=3.17.0s
=3.17.1as
=3.17.1s
=3.17.2s
=3.17.3s
=3.17.4s
=3.18.0as
=3.18.0s
=3.18.0sp
=3.18.1asp
=3.18.1bsp
=3.18.1csp
=3.18.1gsp
=3.18.1hsp
=3.18.1isp
=3.18.1s
=3.18.1sp
=3.18.2asp
=3.18.2s
=3.18.2sp
=3.18.3s
=3.18.4s
=16.2.1
=16.2.2
=16.3.1
=16.3.1a
=16.3.2
=16.3.3
=16.3.4
=16.4.1
=16.4.2
=16.4.3
=16.5.1
=16.5.1a
=16.5.1b
=16.9.3s
=16.9.4c
=15.3\(3\)jd
=15.3\(3\)jd2
=15.3\(3\)jd3
=15.3\(3\)jd4
=15.3\(3\)jd5
=15.3\(3\)jd6
=15.3\(3\)jd7
=15.3\(3\)jd8
=15.3\(3\)jd9
=15.3\(3\)jd11
=15.3\(3\)jd12
=15.3\(3\)jd13
=15.3\(3\)jd14
=15.3\(3\)je
=15.3\(3\)jf
=15.3\(3\)jf1
=15.3\(3\)jf2
=15.3\(3\)jf4
=15.3\(3\)jf5
=15.3\(3\)jg
=15.3\(3\)jg1
=15.3\(3\)jh
=15.3\(3\)jk6
=15.3\(3\)jnp
=15.3\(3\)jnp1
=15.3\(3\)jnp3
=15.3\(3\)jpb
=15.3\(3\)jpb1
=15.3\(3\)jpc
=15.3\(3\)jpc1
=15.3\(3\)jpc2
=15.3\(3\)jpc3
=15.3\(3\)jpc5
=15.3\(3\)jpd
=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\(3\)s
=15.5\(3\)s0a
=15.5\(3\)s1
=15.5\(3\)s1a
=15.5\(3\)s2
=15.5\(3\)s3
=15.5\(3\)s4
=15.5\(3\)s5
=15.5\(3\)sn
=15.5\(3\)sn0a
=15.6\(1\)s
=15.6\(1\)s1
=15.6\(1\)s2
=15.6\(1\)s3
=15.6\(1\)s4
=15.6\(1\)sn
=15.6\(1\)sn1
=15.6\(1\)sn2
=15.6\(1\)sn3
=15.6\(1\)t
=15.6\(1\)t0a
=15.6\(1\)t1
=15.6\(1\)t2
=15.6\(2\)s
=15.6\(2\)s1
=15.6\(2\)s2
=15.6\(2\)s3
=15.6\(2\)s4
=15.6\(2\)sn
=15.6\(2\)t
=15.6\(2\)t0a
=15.6\(2\)t1
=15.6\(2\)t2
=15.6\(3\)m
=15.6\(3\)m0a
=15.6\(3\)m1
=15.6\(3\)m1a
=15.6\(3\)m1b
=15.6\(3\)sn
=15.6\(4\)sn
=15.6\(5\)sn
=15.6\(6\)sn
=15.6\(7\)sn
=15.6\(7\)sn1
=15.6\(7\)sn2
=15.6\(7\)sn3

Remedy

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190327-nbar

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