CVE-2017-12319

MEDIUMCISA KEV

5.9

Description

A vulnerability in the Border Gateway Protocol (BGP) over an Ethernet Virtual Private Network (EVPN) for Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a denial of service (DoS) condition, or potentially corrupt the BGP routing table, which could result in network instability. The vulnerability exists due to changes in the implementation of the BGP MPLS-Based Ethernet VPN RFC (RFC 7432) draft between IOS XE software releases. When the BGP Inclusive Multicast Ethernet Tag Route or BGP EVPN MAC/IP Advertisement Route update packet is received, it could be possible that the IP address length field is miscalculated. An attacker could exploit this vulnerability by sending a crafted BGP packet to an affected device after the BGP session was established. An exploit could allow the attacker to cause the affected device to reload or corrupt the BGP routing table; either outcome would result in a DoS. The vulnerability may be triggered when the router receives a crafted BGP message from a peer on an existing BGP session. This vulnerability affects all releases of Cisco IOS XE Software prior to software release 16.3 that support BGP EVPN configurations. If the device is not configured for EVPN, it is not vulnerable. Cisco Bug IDs: CSCui67191, CSCvg52875.

CVE Details

CVSS v3.1 Score5.9

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published3/27/2018

Last Modified1/13/2026

Sourcekev

Honeypot Sightings0

CISA KEV

VendorCisco

ProductIOS XE Software

Vulnerability NameCisco IOS XE Software Ethernet Virtual Private Network Border Gateway Protocol Denial-of-Service Vulnerability

KEV Date Added2022-03-03

Remediation Due Date2022-03-24

Ransomware UseUnknown

Affected Products

cisco:1000_integrated_services_routercisco:1100-4g\/6g_integrated_services_routercisco:1100-4g_integrated_services_routercisco:1100-4gltegb_integrated_services_routercisco:1100-4gltena_integrated_services_routercisco:1100-4p_integrated_services_routercisco:1100-6g_integrated_services_routercisco:1100-8p_integrated_services_routercisco:1100-lte_integrated_services_routercisco:1100_integrated_services_routercisco:1101-4p_integrated_services_routercisco:1101_integrated_services_routercisco:1109-2p_integrated_services_routercisco:1109-4p_integrated_services_routercisco:1109_integrated_services_routercisco:1111x-8p_integrated_services_routercisco:1111x_integrated_services_routercisco:111x_integrated_services_routercisco:1120_integrated_services_routercisco:1131_integrated_services_routercisco:1160_integrated_services_routercisco:1801_integrated_service_routercisco:1802_integrated_service_routercisco:1803_integrated_service_routercisco:1811_integrated_service_routercisco:1812_integrated_service_routercisco:1841_integrated_service_routercisco:1861_integrated_service_routercisco:1905_integrated_services_routercisco:1906c_integrated_services_routercisco:1921_integrated_services_routercisco:1941_integrated_services_routercisco:1941w_integrated_services_routercisco:4000_integrated_services_routercisco:4221_integrated_services_routercisco:422_integrated_services_routercisco:4321\/k9-rf_integrated_services_routercisco:4321\/k9-ws_integrated_services_routercisco:4321\/k9_integrated_services_routercisco:4321_integrated_services_routercisco:4331\/k9-rf_integrated_services_routercisco:4331\/k9-ws_integrated_services_routercisco:4331\/k9_integrated_services_routercisco:4331_integrated_services_routercisco:4351\/k9-rf_integrated_services_routercisco:4351\/k9-ws_integrated_services_routercisco:4351\/k9_integrated_services_routercisco:4351_integrated_services_routercisco:4431_integrated_services_routercisco:44461_integrated_services_routercisco:4451-x_integrated_services_routercisco:4451_integrated_services_routercisco:4461_integrated_services_routercisco:8101-32fhcisco:8101-32hcisco:8102-64hcisco:8201cisco:8201-32fhcisco:8202cisco:8208cisco:8212cisco:8218cisco:8800_12-slotcisco:8800_18-slotcisco:8800_4-slotcisco:8800_8-slotcisco:8804cisco:8808cisco:8812cisco:8818cisco:8831cisco:9800-40cisco:9800-80cisco:9800-clcisco:9800-lcisco:asr_1000cisco:asr_1000-esp100cisco:asr_1000-esp100-xcisco:asr_1000-esp200-xcisco:asr_1000-xcisco:asr_1001cisco:asr_1001-hxcisco:asr_1001-hx_rcisco:asr_1001-xcisco:asr_1001-x_rcisco:asr_1002cisco:asr_1002-hxcisco:asr_1002-hx_rcisco:asr_1002-xcisco:asr_1002-x_rcisco:asr_1004cisco:asr_1006cisco:asr_1006-xcisco:asr_1009-xcisco:asr_1013cisco:asr_1023cisco:asr_900cisco:asr_901-12c-f-dcisco:asr_901-12c-ft-dcisco:asr_901-4c-f-dcisco:asr_901-4c-ft-dcisco:asr_901-6cz-f-acisco:asr_901-6cz-f-dcisco:asr_901-6cz-fs-acisco:asr_901-6cz-fs-dcisco:asr_901-6cz-ft-acisco:asr_901-6cz-ft-dcisco:asr_901s-2sg-f-ahcisco:asr_901s-2sg-f-dcisco:asr_901s-3sg-f-ahcisco:asr_901s-3sg-f-dcisco:asr_901s-4sg-f-dcisco:asr_902cisco:asr_902ucisco:catalyst_8200cisco:catalyst_8300cisco:catalyst_8300-1n1s-4t2xcisco:catalyst_8300-1n1s-6tcisco:catalyst_8300-2n2s-4t2xcisco:catalyst_8300-2n2s-6tcisco:catalyst_8500cisco:catalyst_8500-4qccisco:catalyst_8500lcisco:catalyst_8510csrcisco:catalyst_8510msrcisco:catalyst_8540csrcisco:catalyst_8540msrcisco:catalyst_9200cisco:catalyst_9200cxcisco:catalyst_9200lcisco:catalyst_9300cisco:catalyst_9300-24p-acisco:catalyst_9300-24p-ecisco:catalyst_9300-24s-acisco:catalyst_9300-24s-ecisco:catalyst_9300-24t-acisco:catalyst_9300-24t-ecisco:catalyst_9300-24u-acisco:catalyst_9300-24u-ecisco:catalyst_9300-24ux-acisco:catalyst_9300-24ux-ecisco:catalyst_9300-48p-acisco:catalyst_9300-48p-ecisco:catalyst_9300-48s-acisco:catalyst_9300-48s-ecisco:catalyst_9300-48t-acisco:catalyst_9300-48t-ecisco:catalyst_9300-48u-acisco:catalyst_9300-48u-ecisco:catalyst_9300-48un-acisco:catalyst_9300-48un-ecisco:catalyst_9300-48uxm-acisco:catalyst_9300-48uxm-ecisco:catalyst_9300lcisco:catalyst_9300l-24p-4g-acisco:catalyst_9300l-24p-4g-ecisco:catalyst_9300l-24p-4x-acisco:catalyst_9300l-24p-4x-ecisco:catalyst_9300l-24t-4g-acisco:catalyst_9300l-24t-4g-ecisco:catalyst_9300l-24t-4x-acisco:catalyst_9300l-24t-4x-ecisco:catalyst_9300l-48p-4g-acisco:catalyst_9300l-48p-4g-ecisco:catalyst_9300l-48p-4x-acisco:catalyst_9300l-48p-4x-ecisco:catalyst_9300l-48t-4g-acisco:catalyst_9300l-48t-4g-ecisco:catalyst_9300l-48t-4x-acisco:catalyst_9300l-48t-4x-ecisco:catalyst_9300l_stackcisco:catalyst_9300lmcisco:catalyst_9300xcisco:catalyst_9400cisco:catalyst_9400_supervisor_engine-1cisco:catalyst_9407rcisco:catalyst_9410rcisco:catalyst_9500cisco:catalyst_9500hcisco:catalyst_9600cisco:catalyst_9600_supervisor_engine-1cisco:catalyst_9600xcisco:catalyst_9800cisco:catalyst_9800-40cisco:catalyst_9800-80cisco:catalyst_9800-clcisco:catalyst_9800-lcisco:catalyst_9800-l-ccisco:catalyst_9800-l-fcisco:catalyst_ie3200_rugged_switchcisco:catalyst_ie3300_rugged_switchcisco:cloud_services_router_1000vcisco:esr-6300-con-k9cisco:esr-6300-ncp-k9cisco:integrated_services_virtual_routercisco:ioscisco:ios_xecisco:network_convergence_system_520

Weaknesses (CWE)

CWE-20

References

http://www.securityfocus.com/bid/101676(psirt@cisco.com)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp(psirt@cisco.com)

http://www.securityfocus.com/bid/101676(af854a3a-2127-422b-91ae-364da2661108)

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171103-bgp(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12319(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.