Exploited
high
7.8
CWE
400 399
Advisory Published
Updated

CVE-2017-12237: Cisco IOS and IOS XE Software Internet Key Exchange Denial-of-Service Vulnerability

First published: Thu Sep 28 2017(Updated: )

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.

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

Affected SoftwareAffected VersionHow to fix
Cisco IOS and IOS XE Software
Cisco IOS=15.0\(2\)ej
Cisco IOS=15.0\(2\)ej1
Cisco IOS=15.0\(2\)ex
Cisco IOS=15.0\(2\)ex1
Cisco IOS=15.0\(2\)ex3
Cisco IOS=15.0\(2\)ex4
Cisco IOS=15.0\(2\)ex5
Cisco IOS=15.0\(2\)ez
Cisco IOS=15.0\(2\)se1
Cisco IOS=15.0\(2\)se2
Cisco IOS=15.0\(2\)se3
Cisco IOS=15.0\(2\)se4
Cisco IOS=15.0\(2\)se5
Cisco IOS=15.0\(2\)se6
Cisco IOS=15.0\(2\)se7
Cisco IOS=15.0\(2\)se8
Cisco IOS=15.0\(2\)se9
Cisco IOS=15.0\(2\)se10
Cisco IOS=15.0\(2\)se10a
Cisco IOS=15.0\(2\)se11
Cisco IOS=15.0\(2\)sqd7
Cisco IOS=15.0\(2a\)ex5
Cisco IOS=15.0\(2a\)se9
Cisco IOS=15.1\(1\)sy
Cisco IOS=15.1\(1\)sy1
Cisco IOS=15.1\(1\)sy2
Cisco IOS=15.1\(1\)sy3
Cisco IOS=15.1\(1\)sy4
Cisco IOS=15.1\(1\)sy5
Cisco IOS=15.1\(1\)sy6
Cisco IOS=15.1\(2\)sg7a
Cisco IOS=15.1\(2\)sy
Cisco IOS=15.1\(2\)sy1
Cisco IOS=15.1\(2\)sy2
Cisco IOS=15.1\(2\)sy3
Cisco IOS=15.1\(2\)sy4
Cisco IOS=15.1\(2\)sy4a
Cisco IOS=15.1\(2\)sy5
Cisco IOS=15.1\(2\)sy6
Cisco IOS=15.1\(2\)sy7
Cisco IOS=15.1\(2\)sy8
Cisco IOS=15.1\(2\)sy9
Cisco IOS=15.1\(2\)sy10
Cisco IOS=15.2\(1\)e
Cisco IOS=15.2\(1\)e1
Cisco IOS=15.2\(1\)e2
Cisco IOS=15.2\(1\)e3
Cisco IOS=15.2\(1\)ey
Cisco IOS=15.2\(1\)sy
Cisco IOS=15.2\(1\)sy0a
Cisco IOS=15.2\(1\)sy1
Cisco IOS=15.2\(1\)sy1a
Cisco IOS=15.2\(1\)sy2
Cisco IOS=15.2\(1\)sy3
Cisco IOS=15.2\(1\)sy4
Cisco IOS=15.2\(2\)e
Cisco IOS=15.2\(2\)e1
Cisco IOS=15.2\(2\)e2
Cisco IOS=15.2\(2\)e3
Cisco IOS=15.2\(2\)e4
Cisco IOS=15.2\(2\)e5
Cisco IOS=15.2\(2\)e5a
Cisco IOS=15.2\(2\)e5b
Cisco IOS=15.2\(2\)e6
Cisco IOS=15.2\(2\)eb
Cisco IOS=15.2\(2\)eb1
Cisco IOS=15.2\(2\)eb2
Cisco IOS=15.2\(2\)gc
Cisco IOS=15.2\(2\)s
Cisco IOS=15.2\(2\)s0a
Cisco IOS=15.2\(2\)s0c
Cisco IOS=15.2\(2\)s1
Cisco IOS=15.2\(2\)s2
Cisco IOS=15.2\(2\)sng
Cisco IOS=15.2\(2\)snh1
Cisco IOS=15.2\(2\)sni
Cisco IOS=15.2\(2\)sy
Cisco IOS=15.2\(2\)sy1
Cisco IOS=15.2\(2\)sy2
Cisco IOS=15.2\(2\)sy3
Cisco IOS=15.2\(2\)t
Cisco IOS=15.2\(2\)t1
Cisco IOS=15.2\(2\)t2
Cisco IOS=15.2\(2\)t3
Cisco IOS=15.2\(2\)t4
Cisco IOS=15.2\(2a\)e1
Cisco IOS=15.2\(2a\)e2
Cisco IOS=15.2\(3\)e
Cisco IOS=15.2\(3\)e1
Cisco IOS=15.2\(3\)e2
Cisco IOS=15.2\(3\)e3
Cisco IOS=15.2\(3\)e4
Cisco IOS=15.2\(3\)e5
Cisco IOS=15.2\(3\)ex
Cisco IOS=15.2\(3\)gc
Cisco IOS=15.2\(3\)gc1
Cisco IOS=15.2\(3\)t
Cisco IOS=15.2\(3\)t1
Cisco IOS=15.2\(3\)t2
Cisco IOS=15.2\(3\)t3
Cisco IOS=15.2\(3\)t4
Cisco IOS=15.2\(3a\)e
Cisco IOS=15.2\(3a\)e1
Cisco IOS=15.2\(3m\)e2
Cisco IOS=15.2\(3m\)e3
Cisco IOS=15.2\(3m\)e6
Cisco IOS=15.2\(3m\)e8
Cisco IOS=15.2\(4\)e
Cisco IOS=15.2\(4\)e1
Cisco IOS=15.2\(4\)e2
Cisco IOS=15.2\(4\)e3
Cisco IOS=15.2\(4\)e4
Cisco IOS=15.2\(4\)ec
Cisco IOS=15.2\(4\)ec1
Cisco IOS=15.2\(4\)ec2
Cisco IOS=15.2\(4\)gc
Cisco IOS=15.2\(4\)gc1
Cisco IOS=15.2\(4\)gc2
Cisco IOS=15.2\(4\)gc3
Cisco IOS=15.2\(4\)m
Cisco IOS=15.2\(4\)m1
Cisco IOS=15.2\(4\)m2
Cisco IOS=15.2\(4\)m3
Cisco IOS=15.2\(4\)m4
Cisco IOS=15.2\(4\)m5
Cisco IOS=15.2\(4\)m6
Cisco IOS=15.2\(4\)m6a
Cisco IOS=15.2\(4\)m7
Cisco IOS=15.2\(4\)m8
Cisco IOS=15.2\(4\)m9
Cisco IOS=15.2\(4\)m10
Cisco IOS=15.2\(4\)m11
Cisco IOS=15.2\(4\)s
Cisco IOS=15.2\(4\)s1
Cisco IOS=15.2\(4\)s2
Cisco IOS=15.2\(4\)s3
Cisco IOS=15.2\(4\)s3a
Cisco IOS=15.2\(4\)s4
Cisco IOS=15.2\(4\)s4a
Cisco IOS=15.2\(4\)s5
Cisco IOS=15.2\(4\)s6
Cisco IOS=15.2\(4\)s7
Cisco IOS=15.2\(4m\)e1
Cisco IOS=15.2\(4m\)e3
Cisco IOS=15.2\(4n\)e2
Cisco IOS=15.2\(4o\)e2
Cisco IOS=15.2\(4p\)e1
Cisco IOS=15.2\(5\)e
Cisco IOS=15.2\(5\)e1
Cisco IOS=15.2\(5\)e2
Cisco IOS=15.2\(5\)e2a
Cisco IOS=15.2\(5\)e2b
Cisco IOS=15.2\(5\)e2c
Cisco IOS=15.2\(5a\)e
Cisco IOS=15.2\(5a\)e1
Cisco IOS=15.2\(5b\)e
Cisco IOS=15.2\(5c\)e
Cisco IOS=15.3\(1\)s
Cisco IOS=15.3\(1\)s1
Cisco IOS=15.3\(1\)s2
Cisco IOS=15.3\(1\)sy
Cisco IOS=15.3\(1\)sy1
Cisco IOS=15.3\(1\)sy2
Cisco IOS=15.3\(1\)t
Cisco IOS=15.3\(1\)t1
Cisco IOS=15.3\(1\)t2
Cisco IOS=15.3\(1\)t3
Cisco IOS=15.3\(1\)t4
Cisco IOS=15.3\(2\)s
Cisco IOS=15.3\(2\)s0a
Cisco IOS=15.3\(2\)s1
Cisco IOS=15.3\(2\)s2
Cisco IOS=15.3\(2\)t
Cisco IOS=15.3\(2\)t1
Cisco IOS=15.3\(2\)t2
Cisco IOS=15.3\(2\)t3
Cisco IOS=15.3\(2\)t4
Cisco IOS=15.3\(3\)jbb6a
Cisco IOS=15.3\(3\)jc7
Cisco IOS=15.3\(3\)jc50
Cisco IOS=15.3\(3\)jc51
Cisco IOS=15.3\(3\)jca7
Cisco IOS=15.3\(3\)jd7
Cisco IOS=15.3\(3\)jda3
Cisco IOS=15.3\(3\)je1
Cisco IOS=15.3\(3\)jf1
Cisco IOS=15.3\(3\)jnc4
Cisco IOS=15.3\(3\)jnd2
Cisco IOS=15.3\(3\)jnp2
Cisco IOS=15.3\(3\)jnp4
Cisco IOS=15.3\(3\)jpb
Cisco IOS=15.3\(3\)jpb2
Cisco IOS=15.3\(3\)jpc3
Cisco IOS=15.3\(3\)m
Cisco IOS=15.3\(3\)m1
Cisco IOS=15.3\(3\)m2
Cisco IOS=15.3\(3\)m3
Cisco IOS=15.3\(3\)m4
Cisco IOS=15.3\(3\)m5
Cisco IOS=15.3\(3\)m6
Cisco IOS=15.3\(3\)m7
Cisco IOS=15.3\(3\)m8
Cisco IOS=15.3\(3\)m8a
Cisco IOS=15.3\(3\)m9
Cisco IOS=15.3\(3\)s
Cisco IOS=15.3\(3\)s1
Cisco IOS=15.3\(3\)s1a
Cisco IOS=15.3\(3\)s2
Cisco IOS=15.3\(3\)s3
Cisco IOS=15.3\(3\)s4
Cisco IOS=15.3\(3\)s5
Cisco IOS=15.3\(3\)s6
Cisco IOS=15.3\(3\)s7
Cisco IOS=15.3\(3\)s8
Cisco IOS=15.3\(3\)s8a
Cisco IOS=15.3\(3\)s9
Cisco IOS=15.4\(1\)cg
Cisco IOS=15.4\(1\)cg1
Cisco IOS=15.4\(1\)s
Cisco IOS=15.4\(1\)s1
Cisco IOS=15.4\(1\)s2
Cisco IOS=15.4\(1\)s3
Cisco IOS=15.4\(1\)s4
Cisco IOS=15.4\(1\)sy
Cisco IOS=15.4\(1\)sy1
Cisco IOS=15.4\(1\)sy2
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\(2\)cg
Cisco IOS=15.4\(2\)s
Cisco IOS=15.4\(2\)s1
Cisco IOS=15.4\(2\)s2
Cisco IOS=15.4\(2\)s3
Cisco IOS=15.4\(2\)s4
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\(3\)s
Cisco IOS=15.4\(3\)s1
Cisco IOS=15.4\(3\)s2
Cisco IOS=15.4\(3\)s3
Cisco IOS=15.4\(3\)s4
Cisco IOS=15.4\(3\)s5
Cisco IOS=15.4\(3\)s5a
Cisco IOS=15.4\(3\)s6
Cisco IOS=15.4\(3\)s6a
Cisco IOS=15.4\(3\)s6b
Cisco IOS=15.4\(3\)s7
Cisco IOS=15.4\(3\)s7a
Cisco IOS=15.5\(1\)s
Cisco IOS=15.5\(1\)s1
Cisco IOS=15.5\(1\)s2
Cisco IOS=15.5\(1\)s3
Cisco IOS=15.5\(1\)s4
Cisco IOS=15.5\(1\)sy
Cisco IOS=15.5\(1\)sy1
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\(2\)s
Cisco IOS=15.5\(2\)s1
Cisco IOS=15.5\(2\)s2
Cisco IOS=15.5\(2\)s3
Cisco IOS=15.5\(2\)s4
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\(3\)m
Cisco IOS=15.5\(3\)m0a
Cisco IOS=15.5\(3\)m1
Cisco IOS=15.5\(3\)m2
Cisco IOS=15.5\(3\)m3
Cisco IOS=15.5\(3\)m4
Cisco IOS=15.5\(3\)m4a
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\(3\)s2a
Cisco IOS=15.5\(3\)s2b
Cisco IOS=15.5\(3\)s3
Cisco IOS=15.5\(3\)s3a
Cisco IOS=15.5\(3\)s4
Cisco IOS=15.5\(3\)s4a
Cisco IOS=15.5\(3\)s4b
Cisco IOS=15.5\(3\)s4d
Cisco IOS=15.5\(3\)s5
Cisco IOS=15.5\(3\)sn
Cisco IOS=15.6\(1\)s
Cisco IOS=15.6\(1\)s1
Cisco IOS=15.6\(1\)s1a
Cisco IOS=15.6\(1\)s2
Cisco IOS=15.6\(1\)s3
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\(2\)s
Cisco IOS=15.6\(2\)s0a
Cisco IOS=15.6\(2\)s1
Cisco IOS=15.6\(2\)s2
Cisco IOS=15.6\(2\)s3
Cisco IOS=15.6\(2\)sn
Cisco IOS=15.6\(2\)sp
Cisco IOS=15.6\(2\)sp1
Cisco IOS=15.6\(2\)sp1b
Cisco IOS=15.6\(2\)sp1c
Cisco IOS=15.6\(2\)sp2
Cisco IOS=15.6\(2\)sp2a
Cisco IOS=15.6\(2\)t
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\(3\)m1b
Cisco IOS=15.6\(3\)m2
Cisco IOS=15.6\(3\)m2a
Cisco IOS XE Web UI<=15.4\(3\)s
Cisco IOS XE Web UI=3.5.0e
Cisco IOS XE Web UI=3.5.1e
Cisco IOS XE Web UI=3.5.2e
Cisco IOS XE Web UI=3.5.3e
Cisco IOS XE Web UI=3.6.0e
Cisco IOS XE Web UI=3.6.0s
Cisco IOS XE Web UI=3.6.1e
Cisco IOS XE Web UI=3.6.1s
Cisco IOS XE Web UI=3.6.2ae
Cisco IOS XE Web UI=3.6.2e
Cisco IOS XE Web UI=3.6.2s
Cisco IOS XE Web UI=3.6.3e
Cisco IOS XE Web UI=3.6.4e
Cisco IOS XE Web UI=3.6.5ae
Cisco IOS XE Web UI=3.6.5be
Cisco IOS XE Web UI=3.6.5e
Cisco IOS XE Web UI=3.6.6e
Cisco IOS XE Web UI=3.7.0bs
Cisco IOS XE Web UI=3.7.0e
Cisco IOS XE Web UI=3.7.0s
Cisco IOS XE Web UI=3.7.1as
Cisco IOS XE Web UI=3.7.1e
Cisco IOS XE Web UI=3.7.1s
Cisco IOS XE Web UI=3.7.2e
Cisco IOS XE Web UI=3.7.2s
Cisco IOS XE Web UI=3.7.2ts
Cisco IOS XE Web UI=3.7.3e
Cisco IOS XE Web UI=3.7.3s
Cisco IOS XE Web UI=3.7.4as
Cisco IOS XE Web UI=3.7.4e
Cisco IOS XE Web UI=3.7.4s
Cisco IOS XE Web UI=3.7.5e
Cisco IOS XE Web UI=3.7.5s
Cisco IOS XE Web UI=3.7.6s
Cisco IOS XE Web UI=3.7.7s
Cisco IOS XE Web UI=3.8.0e
Cisco IOS XE Web UI=3.8.0ex
Cisco IOS XE Web UI=3.8.0s
Cisco IOS XE Web UI=3.8.1e
Cisco IOS XE Web UI=3.8.1s
Cisco IOS XE Web UI=3.8.2e
Cisco IOS XE Web UI=3.8.2s
Cisco IOS XE Web UI=3.8.3e
Cisco IOS XE Web UI=3.8.4e
Cisco IOS XE Web UI=3.9.0as
Cisco IOS XE Web UI=3.9.0e
Cisco IOS XE Web UI=3.9.0s
Cisco IOS XE Web UI=3.9.1as
Cisco IOS XE Web UI=3.9.1e
Cisco IOS XE Web UI=3.9.1s
Cisco IOS XE Web UI=3.9.2e
Cisco IOS XE Web UI=3.9.2s
Cisco IOS XE Web UI=3.10.0s
Cisco IOS XE Web UI=3.10.1s
Cisco IOS XE Web UI=3.10.1xbs
Cisco IOS XE Web UI=3.10.2s
Cisco IOS XE Web UI=3.10.2ts
Cisco IOS XE Web UI=3.10.3s
Cisco IOS XE Web UI=3.10.4s
Cisco IOS XE Web UI=3.10.5s
Cisco IOS XE Web UI=3.10.6s
Cisco IOS XE Web UI=3.10.7s
Cisco IOS XE Web UI=3.10.8as
Cisco IOS XE Web UI=3.10.8s
Cisco IOS XE Web UI=3.10.9s
Cisco IOS XE Web UI=3.11.0s
Cisco IOS XE Web UI=3.11.1s
Cisco IOS XE Web UI=3.11.2s
Cisco IOS XE Web UI=3.11.3s
Cisco IOS XE Web UI=3.11.4s
Cisco IOS XE Web UI=3.12.0as
Cisco IOS XE Web UI=3.12.0s
Cisco IOS XE Web UI=3.12.1s
Cisco IOS XE Web UI=3.12.2s
Cisco IOS XE Web UI=3.12.3s
Cisco IOS XE Web UI=3.12.4s
Cisco IOS XE Web UI=3.13.0as
Cisco IOS XE Web UI=3.13.0s
Cisco IOS XE Web UI=3.13.1s
Cisco IOS XE Web UI=3.13.2as
Cisco IOS XE Web UI=3.13.2s
Cisco IOS XE Web UI=3.13.3s
Cisco IOS XE Web UI=3.13.4s
Cisco IOS XE Web UI=3.13.5as
Cisco IOS XE Web UI=3.13.5s
Cisco IOS XE Web UI=3.13.6as
Cisco IOS XE Web UI=3.13.6s
Cisco IOS XE Web UI=3.13.7as
Cisco IOS XE Web UI=3.13.7s
Cisco IOS XE Web UI=3.14.0s
Cisco IOS XE Web UI=3.14.1s
Cisco IOS XE Web UI=3.14.2s
Cisco IOS XE Web UI=3.14.3s
Cisco IOS XE Web UI=3.14.4s
Cisco IOS XE Web UI=3.15.0s
Cisco IOS XE Web UI=3.15.1cs
Cisco IOS XE Web UI=3.15.1s
Cisco IOS XE Web UI=3.15.2s
Cisco IOS XE Web UI=3.15.3s
Cisco IOS XE Web UI=3.15.4s
Cisco IOS XE Web UI=3.16.0cs
Cisco IOS XE Web UI=3.16.0s
Cisco IOS XE Web UI=3.16.1as
Cisco IOS XE Web UI=3.16.1s
Cisco IOS XE Web UI=3.16.2as
Cisco IOS XE Web UI=3.16.2bs
Cisco IOS XE Web UI=3.16.2s
Cisco IOS XE Web UI=3.16.3as
Cisco IOS XE Web UI=3.16.3s
Cisco IOS XE Web UI=3.16.4as
Cisco IOS XE Web UI=3.16.4bs
Cisco IOS XE Web UI=3.16.4ds
Cisco IOS XE Web UI=3.16.4s
Cisco IOS XE Web UI=3.16.5s
Cisco IOS XE Web UI=3.17.0s
Cisco IOS XE Web UI=3.17.1as
Cisco IOS XE Web UI=3.17.1s
Cisco IOS XE Web UI=3.17.3s
Cisco IOS XE Web UI=3.18.0as
Cisco IOS XE Web UI=3.18.0s
Cisco IOS XE Web UI=3.18.0sp
Cisco IOS XE Web UI=3.18.1asp
Cisco IOS XE Web UI=3.18.1bsp
Cisco IOS XE Web UI=3.18.1csp
Cisco IOS XE Web UI=3.18.1s
Cisco IOS XE Web UI=3.18.1sp
Cisco IOS XE Web UI=3.18.2asp
Cisco IOS XE Web UI=3.18.2s
Cisco IOS XE Web UI=3.18.2sp
Cisco IOS XE Web UI=3.18.3s
Cisco IOS XE Web UI=3.18.3vs
Cisco IOS XE Web UI=16.1.1
Cisco IOS XE Web UI=16.1.2
Cisco IOS XE Web UI=16.1.3
Cisco IOS XE Web UI=16.1.3a
Cisco IOS XE Web UI=16.1.4
Cisco IOS XE Web UI=16.2.1
Cisco IOS XE Web UI=16.2.2
Cisco IOS XE Web UI=16.2.2a
Cisco IOS XE Web UI=16.2.3
Cisco IOS XE Web UI=16.3.1
Cisco IOS XE Web UI=16.3.1a
Cisco IOS XE Web UI=16.3.2
Cisco IOS XE Web UI=16.3.3
Cisco IOS XE Web UI=16.3.4
Cisco IOS XE Web UI=16.4.1
Cisco IOS XE Web UI=16.4.2
Cisco IOS XE Web UI=16.5.1
Cisco IOS XE Web UI=16.5.1a
Cisco IOS XE Web UI=16.5.1b
Cisco IOS XE Web UI=16.5.1c
All of
Any of
Cisco IOS>=15.0<=15.6
Cisco IOS XE Web UI>=3.5.0e<=16.5
Any of
Cisco 1000 Integrated Services Router
Cisco 1100-4g/6g Integrated Services Router
Cisco 1100-4g/6g Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1109-4p Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1100 Integrated Services Router
Cisco 1100 Series Integrated Services Router
Cisco 1101 Integrated Services Router
Cisco 1101 Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 1109 Integrated Services Router
Cisco 1111x-8p
Cisco 111x Integrated Services Router
Cisco 1120 Integrated Services Router
Cisco 1131 Integrated Services Router
Cisco 1160 Integrated Services Router
Cisco Connected Grid Routers
Cisco 1801 Integrated Service Router
Cisco 1802 Integrated Service Router
Cisco 1803 Integrated Service Router
Cisco 1811 Integrated Service Router
Cisco 1812 Integrated Service Router
Cisco 1841 Integrated Service Router
Cisco 1861 Integrated Service Router
Cisco 1905 Serial Integrated Services Router
Cisco 1906c Integrated Services Router
Cisco 1921 Integrated Services Router
Cisco 1941w Integrated Services Router
Cisco 1941w Integrated Services Router
Cisco 4000 Series Integrated Services Routers
Cisco 422 Integrated Services Router
Cisco 4221 Integrated Services Router
Cisco 4321/k9-rf Integrated Services Router
Cisco 4321/k9-ws Integrated Services Router
Cisco 4321 Integrated Services Router
Cisco 4321/k9 Integrated Services Router
Cisco 4331/k9-rf Integrated Services Router
Cisco 4331/k9-ws Integrated Services Router
Cisco 4331 Integrated Services Router
Cisco 4331/k9-rf Integrated Services Router
Cisco 4351/k9-rf Integrated Services Router
Cisco 4351/k9 Integrated Services Router
Cisco 4351/k9 Integrated Services Router
Cisco 4351/k9-rf Integrated Services Router
Cisco 4431 Integrated Services Router
Cisco 44461 Integrated Services Router
Cisco 4451-X Integrated Services Router
Cisco 4451-X Integrated Services Router
Cisco 4441 Integrated Services Router
Cisco 8101-32h
Cisco 8101-32h
Cisco 8102-64h
Cisco 8201
Cisco 8201
Cisco 8202
Cisco 8208
Cisco 8212
Cisco 8218
Cisco 8800 12-slot
Cisco 8800 18-slot
Cisco 8800 4-slot
Cisco 8800 8-slot
Cisco 8804
Cisco 8808
Cisco 8812
Cisco 8818
Cisco 8831 Firmware
Cisco Catalyst 9800-40
Cisco Catalyst 9800-80
Cisco Catalyst 9800-CL
Cisco Catalyst 9800-L
Cisco ASR 1000 Series
Cisco ASR 1000 series software
Cisco ASR 1001
Cisco ASR 1001
Cisco ASR 1001-HX-RF
Cisco ASR 1001-X
Cisco ASR 1001-X
Cisco ASR 1002 Fixed Router
Cisco ASR 1002 Fixed Router
Cisco ASR 1002-HX
Cisco ASR 1002-X
Cisco ASR 1002-X
Cisco ASR 1004
Cisco ASR 1006
Cisco ASR 1006-X
Cisco ASR 1009-X
Cisco ASR 1013
Cisco ASR 1023 Router
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-12x48UQ
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-12x48UQ-S
Cisco Catalyst 3650-12X48UR
Cisco Catalyst 3650
Cisco Catalyst 3650-12X48UR-L
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-12x48UZ-L
Cisco Catalyst 3650-12x48uz-s
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-24PD-S
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-24PS-E
Cisco Catalyst 3650-24PS-L
Cisco Catalyst 3650-24PS
Cisco Catalyst 3650-24TD-E
Cisco Catalyst 3650-24TD-L
Cisco Catalyst 3650-24TD Switch
Cisco Catalyst 3650
Cisco Catalyst 3650-24TS-L
Cisco Catalyst 3650-24TS-S
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-48FQ-E
Cisco Catalyst 3650-48FQ-L
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-48FQM Switch
Cisco Catalyst 3650
Cisco Catalyst 3650-48FQM Switch
Cisco Catalyst 3650 Series Switch
Cisco Catalyst 3650 Series Switch WS-C3650-48FS
Cisco Catalyst 3650 Series Switch WS-C3650-48FS
Cisco Catalyst 3650-48PD-E
Cisco Catalyst 3650-48PD
Cisco Catalyst 3650-48PD-S
Cisco Catalyst 3650
Cisco Catalyst 3650-48PQ-L
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-48PS-L
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650 Series
Cisco Catalyst 3650-48TQ-S
Cisco Catalyst 3650-48TS Switch
Cisco Catalyst 3650-48TS Switch
Cisco Catalyst 3650-48TS Switch
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3650
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850-12X48U-E
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850 Series
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 9300-24s-e Firmware
Cisco Catalyst 3850-24S-S
Cisco Catalyst 3850
Cisco Catalyst 3850-24T-L
Cisco Catalyst 3850-24T-S
Cisco Catalyst 3850-24U
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850-24XS
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850-24XU
Cisco Catalyst 3850-24XU
Cisco Catalyst 3850-24XU
Cisco Catalyst 3850-24XU
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850-48F-E
Cisco Catalyst 3850-48F-L
Cisco Catalyst 3850-48F-S
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850-48P-S
Cisco Catalyst 3850-48PW-S
Cisco Catalyst 3850-48T-E
Cisco Catalyst 3850-48T-L
Cisco Catalyst 3850 Series
Cisco Catalyst 3850
Cisco Catalyst 3850-48U-E
Cisco Catalyst 3850-48U
Cisco Catalyst 3850-48U
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850-48XS-S
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 8200
Cisco Catalyst 8300
Cisco Catalyst 8300-1N1S-4T2X
Cisco Catalyst 8300
Cisco Catalyst 8300-2N2S-4T2X
Cisco Catalyst 8300
Cisco Catalyst 8500L Series Router
Cisco Catalyst 8500
Cisco Catalyst 8500
Cisco Catalyst 8510 CSR
Cisco Catalyst 8510MSR
Cisco Catalyst 8540CSR
Cisco Catalyst 8540MSR
Cisco Catalyst 9200CX
Cisco Catalyst 9200CX
Cisco Catalyst 9200 Series
Cisco Catalyst 9300 Firmware
Cisco Catalyst 9300-24p-a Firmware
Cisco Catalyst 9300-24p-e Firmware
Cisco Catalyst 9300-24s-a Firmware
Cisco Catalyst 9300-24s-e Firmware
Cisco Catalyst 9300-24t-a Firmware
Cisco Catalyst 9300-24t-e Firmware
Cisco Catalyst 9300-24u-a Firmware
Cisco Catalyst 9300-24u-e Firmware
Cisco Catalyst 9300-24ux-a Firmware
Cisco Catalyst 9300-24ux-e Firmware
Cisco Catalyst 9300-48p-a Firmware
Cisco Catalyst 9300-48p-e Firmware
Cisco Catalyst 9300-48s-a Firmware
Cisco Catalyst 9300-48s-e Firmware
Cisco Catalyst 9300-48t-a Firmware
Cisco Catalyst 9300-48t-e Firmware
Cisco Catalyst 9300-48u-a Firmware
Cisco Catalyst 9300-48u-e Firmware
Cisco Catalyst 9300-48un-a Firmware
Cisco Catalyst 9300-48un-e Firmware
Cisco Catalyst 9300-48uxm-a Firmware
Cisco Catalyst 9300-48uxm-e Firmware
Cisco Catalyst 9300l Firmware
Cisco Catalyst 9300L-24P-4G-A Firmware
Cisco Catalyst 9300l-24p-4g-e Firmware
Cisco Catalyst 9300L-24P-4X-A Firmware
Cisco Catalyst 9300l-24p-4x-e Firmware
Cisco Catalyst 9300l-24t-4g-a Firmware
Cisco Catalyst 9300L-24T-4G-E Firmware
Cisco Catalyst 9300l-24t-4x-a Firmware
Cisco Catalyst 9300L-24T-4X-E Firmware
Cisco Catalyst 9300L-48P-4G-A Firmware
Cisco Catalyst 9300l-48p-4g-e Firmware
Cisco Catalyst 9300l-48p-4x-a Firmware
Cisco Catalyst 9300L-48P-4X-E Firmware
Cisco Catalyst 9300l-48t-4g-a Firmware
Cisco Catalyst 9300l-48t-4g-e Firmware
Cisco Catalyst 9300l-48t-4x-a Firmware
Cisco Catalyst 9300L-48T-4X-E Firmware
Cisco Catalyst 9300L Stack
Cisco Catalyst 9300lm Firmware
Cisco Catalyst 9300x Firmware
Cisco Catalyst 9400
Cisco Catalyst 9400 Supervisor Engine-1
Cisco Catalyst C9407R
Cisco Catalyst C9410R
Cisco Catalyst 9500 Series
Cisco Catalyst 9500H
Cisco Catalyst 9600
Cisco Catalyst 9600 Supervisor Engine-1
Cisco Catalyst 9600
Cisco Catalyst 9800 Firmware
Cisco Catalyst 9800-CL
Cisco Catalyst 9800-L
Cisco Catalyst 9800-L
Cisco Catalyst 9800-L
Cisco Catalyst IE3200
Cisco Catalyst IE3300
Cisco Catalyst IE3400
Cisco Catalyst IE3400
Cisco Catalyst IE9300
Cisco cBR-8 Converged Broadband Routers
Cisco ESR-6300-CON-K9
Cisco ESR-6300-NCP-K9
Cisco ESR6300 Embedded Series Routers
Cisco Integrated Services Virtual Router Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2017-12237?

    The severity of CVE-2017-12237 is rated as high due to the potential for remote attackers to cause significant disruption to affected devices.

  • How do I fix CVE-2017-12237?

    To fix CVE-2017-12237, update the affected Cisco IOS and IOS XE software to a version that addresses this vulnerability, as detailed in Cisco's security advisory.

  • What systems are affected by CVE-2017-12237?

    CVE-2017-12237 affects specific versions of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5.

  • Can CVE-2017-12237 be exploited remotely?

    Yes, CVE-2017-12237 can be exploited remotely by an unauthenticated attacker.

  • What impact does CVE-2017-12237 have on my network devices?

    CVE-2017-12237 can lead to high CPU utilization, traceback messages, or even a reload of affected devices.

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