Description
A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol and are sent to an affected device via IPv4 packets. An attacker could exploit this vulnerability by sending a crafted H.323 RAS packet through an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to use an application layer gateway with NAT (NAT ALG) for H.323 RAS messages. By default, a NAT ALG is enabled for H.323 RAS messages. Cisco Bug IDs: CSCvc57217.
Published: 2017-09-28
Score: 7.5 High
EPSS: 6.8% Low
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Wed, 22 Oct 2025 00:15:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Fri, 15 Nov 2024 18:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-03-03'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Cisco 1100-4g\/6g Integrated Services Router 1100-4g Integrated Services Router 1100-4gltegb Integrated Services Router 1100-4gltena Integrated Services Router 1100-4p Integrated Services Router 1100-6g Integrated Services Router 1100-8p Integrated Services Router 1100-lte Integrated Services Router 1100 Integrated Services Router 1100 Terminal Services Gateways 1101-4p Integrated Services Router 1101 Integrated Services Router 1109-2p Integrated Services Router 1109-4p Integrated Services Router 1109 Integrated Services Router 1111x-8p Integrated Services Router 111x Integrated Services Router 1120 Integrated Services Router 1131 Integrated Services Router 1160 Integrated Services Router 1801 Integrated Service Router 1802 Integrated Service Router 1803 Integrated Service Router 1811 Integrated Service Router 1812 Integrated Service Router 1841 Integrated Service Router 1861 Integrated Service Router 1905 Integrated Services Router 1906c Integrated Services Router 1921 Integrated Services Router 1941 Integrated Services Router 1941w Integrated Services Router 4000 Integrated Services Router 4221 Integrated Services Router 8101-32fh 8101-32h 8102-64h 8201 8201-32fh 8202 8208 8212 8218 8800 12-slot 8800 18-slot 8800 4-slot 8800 8-slot 8804 8808 8812 8818 9800-40 9800-80 9800-cl 9800-l Asr 1000 Asr 1000-esp100 Asr 1000-esp100-x Asr 1000-esp200-x Asr 1001 Asr 1001-hx Asr 1001-hx R Asr 1001-x Asr 1001-x R Asr 1002-hx Asr 1002-hx R Asr 1002-x Asr 1002-x R Asr 1002 Fixed Router Asr 1004 Asr 1006 Asr 1006-x Asr 1009-x Asr 1013 Asr 1023 Asr 900 Asr 9000 Asr 9000v Asr 9001 Asr 9006 Asr 901-12c-f-d Asr 901-12c-ft-d Asr 901-4c-f-d Asr 901-4c-ft-d Asr 901-6cz-f-a Asr 901-6cz-f-d Asr 901-6cz-fs-a Asr 901-6cz-fs-d Asr 901-6cz-ft-a Asr 901-6cz-ft-d Asr 9010 Asr 901s-2sg-f-ah Asr 901s-2sg-f-d Asr 901s-3sg-f-ah Asr 901s-3sg-f-d Asr 901s-4sg-f-d Asr 902 Asr 902u Asr 903 Asr 907 Asr 914 Asr 920-10sz-pd Asr 920-10sz-pd R Asr 920-12cz-a Asr 920-12cz-a R Asr 920-12cz-d Asr 920-12cz-d R Asr 920-12sz-im Asr 920-12sz-im R Asr 920-24sz-im Asr 920-24sz-im R Asr 920-24sz-m Asr 920-24sz-m R Asr 920-24tz-m Asr 920-24tz-m R Asr 920-4sz-a Asr 920-4sz-a R Asr 920-4sz-d Asr 920-4sz-d R Asr 920u-12sz-im Asr 9901 Asr 9902 Asr 9903 Asr 9904 Asr 9906 Asr 9910 Asr 9912 Asr 9920 Asr 9922 Catalyst 3650 Catalyst 3650-12x48fd-e Catalyst 3650-12x48fd-l Catalyst 3650-12x48fd-s Catalyst 3650-12x48uq Catalyst 3650-12x48uq-e Catalyst 3650-12x48uq-l Catalyst 3650-12x48uq-s Catalyst 3650-12x48ur Catalyst 3650-12x48ur-e Catalyst 3650-12x48ur-l Catalyst 3650-12x48ur-s Catalyst 3650-12x48uz Catalyst 3650-12x48uz-e Catalyst 3650-12x48uz-l Catalyst 3650-12x48uz-s Catalyst 3650-24pd Catalyst 3650-24pd-e Catalyst 3650-24pd-l Catalyst 3650-24pd-s Catalyst 3650-24pdm Catalyst 3650-24pdm-e Catalyst 3650-24pdm-l Catalyst 3650-24pdm-s Catalyst 3650-24ps-e Catalyst 3650-24ps-l Catalyst 3650-24ps-s Catalyst 3650-24td-e Catalyst 3650-24td-l Catalyst 3650-24td-s Catalyst 3650-24ts-e Catalyst 3650-24ts-l Catalyst 3650-24ts-s Catalyst 3650-48fd-e Catalyst 3650-48fd-l Catalyst 3650-48fd-s Catalyst 3650-48fq Catalyst 3650-48fq-e Catalyst 3650-48fq-l Catalyst 3650-48fq-s Catalyst 3650-48fqm Catalyst 3650-48fqm-e Catalyst 3650-48fqm-l Catalyst 3650-48fqm-s Catalyst 3650-48fs-e Catalyst 3650-48fs-l Catalyst 3650-48fs-s Catalyst 3650-48pd-e Catalyst 3650-48pd-l Catalyst 3650-48pd-s Catalyst 3650-48pq-e Catalyst 3650-48pq-l Catalyst 3650-48pq-s Catalyst 3650-48ps-e Catalyst 3650-48ps-l Catalyst 3650-48ps-s Catalyst 3650-48td-e Catalyst 3650-48td-l Catalyst 3650-48td-s Catalyst 3650-48tq-e Catalyst 3650-48tq-l Catalyst 3650-48tq-s Catalyst 3650-48ts-e Catalyst 3650-48ts-l Catalyst 3650-48ts-s Catalyst 3650-8x24pd-e Catalyst 3650-8x24pd-l Catalyst 3650-8x24pd-s Catalyst 3650-8x24uq Catalyst 3650-8x24uq-e Catalyst 3650-8x24uq-l Catalyst 3650-8x24uq-s Catalyst 3850 Catalyst 3850-12s-e Catalyst 3850-12s-s Catalyst 3850-12x48u Catalyst 3850-12xs-e Catalyst 3850-12xs-s Catalyst 3850-16xs-e Catalyst 3850-16xs-s Catalyst 3850-24p-e Catalyst 3850-24p-l Catalyst 3850-24p-s Catalyst 3850-24pw-s Catalyst 3850-24s-e Catalyst 3850-24s-s Catalyst 3850-24t-e Catalyst 3850-24t-l Catalyst 3850-24t-s Catalyst 3850-24u Catalyst 3850-24u-e Catalyst 3850-24u-l Catalyst 3850-24u-s Catalyst 3850-24xs Catalyst 3850-24xs-e Catalyst 3850-24xs-s Catalyst 3850-24xu Catalyst 3850-24xu-e Catalyst 3850-24xu-l Catalyst 3850-24xu-s Catalyst 3850-32xs-e Catalyst 3850-32xs-s Catalyst 3850-48f-e Catalyst 3850-48f-l Catalyst 3850-48f-s Catalyst 3850-48p-e Catalyst 3850-48p-l Catalyst 3850-48p-s Catalyst 3850-48pw-s Catalyst 3850-48t-e Catalyst 3850-48t-l Catalyst 3850-48t-s Catalyst 3850-48u Catalyst 3850-48u-e Catalyst 3850-48u-l Catalyst 3850-48u-s Catalyst 3850-48xs Catalyst 3850-48xs-e Catalyst 3850-48xs-f-e Catalyst 3850-48xs-f-s Catalyst 3850-48xs-s Catalyst 3850-nm-2-40g Catalyst 3850-nm-8-10g Catalyst 8200 Catalyst 8300 Catalyst 8300-1n1s-4t2x Catalyst 8300-1n1s-6t Catalyst 8300-2n2s-4t2x Catalyst 8300-2n2s-6t Catalyst 8500 Catalyst 8500-4qc Catalyst 8500l Catalyst 8510csr Catalyst 8510msr Catalyst 8540csr Catalyst 8540msr Catalyst 9200 Catalyst 9200cx Catalyst 9200l Catalyst 9300 Catalyst 9300-24p-a Catalyst 9300-24p-e Catalyst 9300-24s-a Catalyst 9300-24s-e Catalyst 9300-24t-a Catalyst 9300-24t-e Catalyst 9300-24u-a Catalyst 9300-24u-e Catalyst 9300-24ux-a Catalyst 9300-24ux-e Catalyst 9300-48p-a Catalyst 9300-48p-e Catalyst 9300-48s-a Catalyst 9300-48s-e Catalyst 9300-48t-a Catalyst 9300-48t-e Catalyst 9300-48u-a Catalyst 9300-48u-e Catalyst 9300-48un-a Catalyst 9300-48un-e Catalyst 9300-48uxm-a Catalyst 9300-48uxm-e Catalyst 9300l Catalyst 9300l-24p-4g-a Catalyst 9300l-24p-4g-e Catalyst 9300l-24p-4x-a Catalyst 9300l-24p-4x-e Catalyst 9300l-24t-4g-a Catalyst 9300l-24t-4g-e Catalyst 9300l-24t-4x-a Catalyst 9300l-24t-4x-e Catalyst 9300l-48p-4g-a Catalyst 9300l-48p-4g-e Catalyst 9300l-48p-4x-a Catalyst 9300l-48p-4x-e Catalyst 9300l-48t-4g-a Catalyst 9300l-48t-4g-e Catalyst 9300l-48t-4x-a Catalyst 9300l-48t-4x-e Catalyst 9300l Stack Catalyst 9300lm Catalyst 9300x Catalyst 9500 Catalyst 9500h Catalyst 9600 Catalyst 9600 Supervisor Engine-1 Catalyst 9600x Catalyst 9800 Catalyst 9800-40 Catalyst 9800-40 Wireless Controller Catalyst 9800-80 Catalyst 9800-80 Wireless Controller Catalyst 9800-cl Catalyst 9800-l Catalyst 9800-l-c Catalyst 9800-l-f Catalyst 9800 Embedded Wireless Controller Catalyst Ie3200 Rugged Switch Catalyst Ie3300 Rugged Switch Ios
cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published:

Updated: 2026-01-14T14:53:00.751Z

Reserved: 2017-08-03T00:00:00.000Z

Link: CVE-2017-12231

cve-icon Vulnrichment

Updated: 2024-08-05T18:28:16.883Z

cve-icon NVD

Status : Deferred

Published: 2017-09-29T01:34:48.747

Modified: 2026-01-14T15:15:51.307

Link: CVE-2017-12231

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses