high
7.8
CWE
19
Advisory Published
Updated

CVE-2018-0177

First published: Wed Mar 28 2018(Updated: )

A vulnerability in the IP Version 4 (IPv4) processing code of Cisco IOS XE Software running on Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches 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 incorrect processing of certain IPv4 packets. An attacker could exploit this vulnerability by sending specific IPv4 packets to an IPv4 address on an affected device. 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. If the switch does not reboot when under attack, it would require manual intervention to reload the device. This vulnerability affects Cisco Catalyst 3850 and Cisco Catalyst 3650 Series Switches that are running Cisco IOS XE Software Release 16.1.1 or later, until the first fixed release, and are configured with an IPv4 address. Cisco Bug IDs: CSCvd80714.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE Web UI=denali-16.3.1
Cisco IOS XE Web UI=denali-16.3.3
Cisco 4321/k9 Integrated Services Router
Cisco 4331/k9-rf Integrated Services Router
Cisco 4351/k9-rf Integrated Services Router
Cisco 4431 Integrated Services Router
Cisco 4451-X Integrated Services Router
Cisco ASR 1000 Series Route Processor (RP2)
Cisco ASR 1000 Series Route Processor (RP3)
Cisco ASR 1001
Cisco ASR 1001-X
Cisco ASR 1002 Fixed Router
Cisco ASR 1002-X
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650
Cisco Catalyst 3650-12x48UQ-S
Cisco Catalyst 3650
Cisco Catalyst 3650-12X48UR-L
Cisco Catalyst 3650
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 3650-24PS-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 3650-48FQ-E
Cisco Catalyst 3650-48FQ-L
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
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3650-8X24UQ
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850 Series
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
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
Cisco Catalyst 3850
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 3850-48T-E
Cisco Catalyst 3850-48T-L
Cisco Catalyst 3850 Series
Cisco Catalyst 3850-48U-E
Cisco Catalyst 3850-48U
Cisco Catalyst 3850-48U
Cisco Catalyst 3850
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850-48XS
Cisco Catalyst 3850-48XS-S
Cisco Catalyst 3850-12X48U-E
Cisco Catalyst 3850-12X48U-L
Cisco Catalyst 3850-12X48U-S
Cisco Cloud Services Router 1000V

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-0177?

    CVE-2018-0177 has been assigned a medium severity rating due to its potential to cause high CPU utilization and device reloads.

  • How do I fix CVE-2018-0177?

    To fix CVE-2018-0177, upgrade to a patched version of Cisco IOS XE Software, specifically versions denali-16.3.2 or denali-16.3.4 and later.

  • What devices are affected by CVE-2018-0177?

    CVE-2018-0177 affects Cisco Catalyst 3850 and 3650 Series Switches running specific versions of IOS XE.

  • Can CVE-2018-0177 be exploited remotely?

    Yes, CVE-2018-0177 can be exploited by an unauthenticated remote attacker.

  • What are the potential impacts of CVE-2018-0177?

    The impact of CVE-2018-0177 includes high CPU utilization, generation of traceback messages, or device reloads.

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