CVE-2017-12319

MEDIUM

5.9

CVSS Score

Published: March 27, 2018 at 09:00 AM UTC

Updated: June 17, 2026 at 01:03 AM UTC

198 products affected across 1 vendorIOSIOS XeAsr 1002-x

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Severity

MEDIUM5.9

Exploitation

CISA KEV

Exploit prediction

EPSS 5%

SSVC

Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score5.2%

EPSS (Exploit Prediction Scoring System) estimates a 5.2% chance this CVE is exploited in the wild within the next 30 days — higher than 92% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Required Action

Apply updates per vendor instructions.

Ransomware Use

Unknown

Added to KEV

Mar 3, 2022

Remediation Due

Mar 24, 2022

1678 days overdue

Notes

https://nvd.nist.gov/vuln/detail/CVE-2017-12319

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

IOS · Cisconpm

95%

15.4(1)s

cisco-1000-integrated-services-router (environment) · cisco-1100-4g-6g-integrated-services-router (environment) · cisco-1100-4g-integrated-services-router (environment) · cisco-1100-4gltegb-integrated-services-router (environment) · cisco-1100-4gltena-integrated-services-router (environment) · cisco-1100-4p-integrated-services-router (environment) · cisco-1100-6g-integrated-services-router (environment) · cisco-1100-8p-integrated-services-router (environment) · cisco-1100-integrated-services-router (environment) · cisco-1100-lte-integrated-services-router (environment) · cisco-1101-4p-integrated-services-router (environment) · cisco-1101-integrated-services-router (environment) · cisco-1109-2p-integrated-services-router (environment) · cisco-1109-4p-integrated-services-router (environment) · cisco-1109-integrated-services-router (environment) · cisco-1111x-8p-integrated-services-router (environment) · cisco-1111x-integrated-services-router (environment) · cisco-111x-integrated-services-router (environment) · cisco-1120-integrated-services-router (environment) · cisco-1131-integrated-services-router (environment) · cisco-1160-integrated-services-router (environment) · cisco-1801-integrated-service-router (environment) · cisco-1802-integrated-service-router (environment) · cisco-1803-integrated-service-router (environment) · cisco-1811-integrated-service-router (environment) · cisco-1812-integrated-service-router (environment) · cisco-1841-integrated-service-router (environment) · cisco-1861-integrated-service-router (environment) · cisco-1905-integrated-services-router (environment) · cisco-1906c-integrated-services-router (environment) · cisco-1921-integrated-services-router (environment) · cisco-1941-integrated-services-router (environment) · cisco-1941w-integrated-services-router (environment) · cisco-4000-integrated-services-router (environment) · cisco-422-integrated-services-router (environment) · cisco-4221-integrated-services-router (environment) · cisco-4321-integrated-services-router (environment) · cisco-4321-k9-integrated-services-router (environment) · cisco-4321-k9-rf-integrated-services-router (environment) · cisco-4321-k9-ws-integrated-services-router (environment) · cisco-4331-integrated-services-router (environment) · cisco-4331-k9-integrated-services-router (environment) · cisco-4331-k9-rf-integrated-services-router (environment) · cisco-4331-k9-ws-integrated-services-router (environment) · cisco-4351-integrated-services-router (environment) · cisco-4351-k9-integrated-services-router (environment) · cisco-4351-k9-rf-integrated-services-router (environment) · cisco-4351-k9-ws-integrated-services-router (environment) · cisco-4431-integrated-services-router (environment) · cisco-44461-integrated-services-router (environment) · cisco-4451-integrated-services-router (environment) · cisco-4451-x-integrated-services-router (environment) · cisco-4461-integrated-services-router (environment) · cisco-8101-32fh (environment) · cisco-8101-32h (environment) · cisco-8102-64h (environment) · cisco-8201 (environment) · cisco-8201-32fh (environment) · cisco-8202 (environment) · cisco-8208 (environment) · cisco-8212 (environment) · cisco-8218 (environment) · cisco-8800-12-slot (environment) · cisco-8800-18-slot (environment) · cisco-8800-4-slot (environment) · cisco-8800-8-slot (environment) · cisco-8804 (environment) · cisco-8808 (environment) · cisco-8812 (environment) · cisco-8818 (environment) · cisco-8831 (environment) · cisco-9800-40 (environment) · cisco-9800-80 (environment) · cisco-9800-cl (environment) · cisco-9800-l (environment) · cisco-asr-1000 (environment) · cisco-asr-1000-esp100 (environment) · cisco-asr-1000-esp100-x (environment) · cisco-asr-1000-esp200-x (environment) · cisco-asr-1000-x (environment) · cisco-asr-1001 (environment) · cisco-asr-1001-hx (environment) · cisco-asr-1001-hx-r (environment) · cisco-asr-1001-x (environment) · cisco-asr-1001-x-r (environment) · cisco-asr-1002 (environment) · cisco-asr-1002-hx (environment) · cisco-asr-1002-hx-r (environment) · cisco-asr-1002-x (environment) · cisco-asr-1002-x-r (environment) · cisco-asr-1004 (environment) · cisco-asr-1006 (environment) · cisco-asr-1006-x (environment) · cisco-asr-1009-x (environment) · cisco-asr-1013 (environment) · cisco-asr-1023 (environment) · cisco-asr-900 (environment) · cisco-asr-901-12c-f-d (environment) · cisco-asr-901-12c-ft-d (environment) · cisco-asr-901-4c-f-d (environment) · cisco-asr-901-4c-ft-d (environment) · cisco-asr-901-6cz-f-a (environment) · cisco-asr-901-6cz-f-d (environment) · cisco-asr-901-6cz-fs-a (environment) · cisco-asr-901-6cz-fs-d (environment) · cisco-asr-901-6cz-ft-a (environment) · cisco-asr-901-6cz-ft-d (environment) · cisco-asr-901s-2sg-f-ah (environment) · cisco-asr-901s-2sg-f-d (environment) · cisco-asr-901s-3sg-f-ah (environment) · cisco-asr-901s-3sg-f-d (environment) · cisco-asr-901s-4sg-f-d (environment) · cisco-asr-902 (environment) · cisco-asr-902u (environment) · cisco-catalyst-8200 (environment) · cisco-catalyst-8300 (environment) · cisco-catalyst-8300-1n1s-4t2x (environment) · cisco-catalyst-8300-1n1s-6t (environment) · cisco-catalyst-8300-2n2s-4t2x (environment) · cisco-catalyst-8300-2n2s-6t (environment) · cisco-catalyst-8500 (environment) · cisco-catalyst-8500-4qc (environment) · cisco-catalyst-8500l (environment) · cisco-catalyst-8510csr (environment) · cisco-catalyst-8510msr (environment) · cisco-catalyst-8540csr (environment) · cisco-catalyst-8540msr (environment) · cisco-catalyst-9200 (environment) · cisco-catalyst-9200cx (environment) · cisco-catalyst-9200l (environment) · cisco-catalyst-9300 (environment) · cisco-catalyst-9300-24p-a (environment) · cisco-catalyst-9300-24p-e (environment) · cisco-catalyst-9300-24s-a (environment) · cisco-catalyst-9300-24s-e (environment) · cisco-catalyst-9300-24t-a (environment) · cisco-catalyst-9300-24t-e (environment) · cisco-catalyst-9300-24u-a (environment) · cisco-catalyst-9300-24u-e (environment) · cisco-catalyst-9300-24ux-a (environment) · cisco-catalyst-9300-24ux-e (environment) · cisco-catalyst-9300-48p-a (environment) · cisco-catalyst-9300-48p-e (environment) · cisco-catalyst-9300-48s-a (environment) · cisco-catalyst-9300-48s-e (environment) · cisco-catalyst-9300-48t-a (environment) · cisco-catalyst-9300-48t-e (environment) · cisco-catalyst-9300-48u-a (environment) · cisco-catalyst-9300-48u-e (environment) · cisco-catalyst-9300-48un-a (environment) · cisco-catalyst-9300-48un-e (environment) · cisco-catalyst-9300-48uxm-a (environment) · cisco-catalyst-9300-48uxm-e (environment) · cisco-catalyst-9300l (environment) · cisco-catalyst-9300l-24p-4g-a (environment) · cisco-catalyst-9300l-24p-4g-e (environment) · cisco-catalyst-9300l-24p-4x-a (environment) · cisco-catalyst-9300l-24p-4x-e (environment) · cisco-catalyst-9300l-24t-4g-a (environment) · cisco-catalyst-9300l-24t-4g-e (environment) · cisco-catalyst-9300l-24t-4x-a (environment) · cisco-catalyst-9300l-24t-4x-e (environment) · cisco-catalyst-9300l-48p-4g-a (environment) · cisco-catalyst-9300l-48p-4g-e (environment) · cisco-catalyst-9300l-48p-4x-a (environment) · cisco-catalyst-9300l-48p-4x-e (environment) · cisco-catalyst-9300l-48t-4g-a (environment) · cisco-catalyst-9300l-48t-4g-e (environment) · cisco-catalyst-9300l-48t-4x-a (environment) · cisco-catalyst-9300l-48t-4x-e (environment) · cisco-catalyst-9300l-stack (environment) · cisco-catalyst-9300lm (environment) · cisco-catalyst-9300x (environment) · cisco-catalyst-9400 (environment) · cisco-catalyst-9400-supervisor-engine-1 (environment) · cisco-catalyst-9407r (environment) · cisco-catalyst-9410r (environment) · cisco-catalyst-9500 (environment) · cisco-catalyst-9500h (environment) · cisco-catalyst-9600 (environment) · cisco-catalyst-9600-supervisor-engine-1 (environment) · cisco-catalyst-9600x (environment) · cisco-catalyst-9800 (environment) · cisco-catalyst-9800-40 (environment) · cisco-catalyst-9800-80 (environment) · cisco-catalyst-9800-cl (environment) · cisco-catalyst-9800-l (environment) · cisco-catalyst-9800-l-c (environment) · cisco-catalyst-9800-l-f (environment) · cisco-catalyst-ie3200-rugged-switch (environment) · cisco-catalyst-ie3300-rugged-switch (environment) · cisco-cloud-services-router-1000v (environment) · cisco-esr-6300-con-k9 (environment) · cisco-esr-6300-ncp-k9 (environment) · cisco-network-convergence-system-520 (environment) · cisco-integrated-services-virtual-router (same device)

IOS Xe · Cisco

95%

v < 16.3

Affected range stops below 16.3, so it looks safe — our inference, not a vendor statement

1000 Integrated Services Router · Ciscodevice

80%

All versions

1100-4G/6G Integrated Services Router · Ciscodevice

80%

All versions

1100-4G Integrated Services Router · Ciscodevice

80%