A vulnerability in the Internet Key Exchange Version 2 (IKEv2) support for the AutoReconnect feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to exhaust the free IP addresses from the assigned local pool. This vulnerability occurs because the code does not release the allocated IP address under certain failure conditions. An attacker could exploit this vulnerability by trying to connect to the device with a non-AnyConnect client. A successful exploit could allow the attacker to exhaust the IP addresses from the assigned local pool, which prevents users from logging in and leads to a denial of service (DoS) condition.
References
Link | Resource |
---|---|
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev2-ebFrwMPr | Patch Vendor Advisory |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev2-ebFrwMPr | Patch Vendor Advisory |
Configurations
Configuration 1 (hide)
AND |
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History
21 Nov 2024, 05:44
Type | Values Removed | Values Added |
---|---|---|
References | () https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ikev2-ebFrwMPr - Patch, Vendor Advisory |
22 May 2023, 18:57
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:h:cisco:isr_1109-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4221:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4431:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109-2p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4000:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4461:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4351:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4331:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4451:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101-4p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4451-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1000:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x-8p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100-4g\/6g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_4321:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* |
cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4331_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4221_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4321_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1111x-8p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1000_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1109-2p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1109-4p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1100-8p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1101-4p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1100-4g\/6g_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:4000_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1100-4p_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:* |
First Time |
Cisco 1100-4p Integrated Services Router
Cisco 4351 Integrated Services Router Cisco 1109 Integrated Services Router Cisco 1160 Integrated Services Router Cisco 4221 Integrated Services Router Cisco 4431 Integrated Services Router Cisco 1111x Integrated Services Router Cisco 1100-4g\/6g Integrated Services Router Cisco 1120 Integrated Services Router Cisco 4451 Integrated Services Router Cisco 4331 Integrated Services Router Cisco 1101-4p Integrated Services Router Cisco 1111x-8p Integrated Services Router Cisco 4461 Integrated Services Router Cisco 4321 Integrated Services Router Cisco 1100-8p Integrated Services Router Cisco 4451-x Integrated Services Router Cisco 1100 Integrated Services Router Cisco 4000 Integrated Services Router Cisco 1000 Integrated Services Router Cisco 1109-4p Integrated Services Router Cisco 1109-2p Integrated Services Router Cisco 1101 Integrated Services Router Cisco 111x Integrated Services Router |
Information
Published : 2021-09-23 03:15
Updated : 2024-11-21 05:44
NVD link : CVE-2021-1620
Mitre link : CVE-2021-1620
CVE.ORG link : CVE-2021-1620
JSON object : View
Products Affected
cisco
- catalyst_3850-24pw-s
- catalyst_3650-24td-e
- catalyst_3850
- catalyst_3850-48f-s
- catalyst_9407r
- ess-3300-ncp-e
- asr_1002-hx_r
- catalyst_3650-12x48fd-l
- catalyst_3850-16xs-s
- catalyst_3850-32xs-e
- 1101_integrated_services_router
- c9500-40x
- catalyst_3850-nm-8-10g
- catalyst_3650-12x48ur-l
- catalyst_9300l-24t-4g-a
- asr_1002
- catalyst_3850-48xs-f-s
- asr_1006-x
- catalyst_9300
- catalyst_3650-12x48ur-s
- catalyst_8510csr
- 1100-4p_integrated_services_router
- catalyst_3650-24ts-l
- catalyst_9300l-48t-4g-a
- 8804
- 4351_integrated_services_router
- catalyst_3850-48f-l
- catalyst_9300l-24t-4x-e
- 1100_integrated_services_router
- catalyst_9300-24s-e
- catalyst_9300-48p-e
- catalyst_3850-48t-e
- asr_1004
- catalyst_3650-48fqm-s
- asr_1023
- catalyst_3650-12x48uq-e
- catalyst_3650-48fd-e
- catalyst_3650-8x24pd-e
- catalyst_ess9300
- catalyst_3650-48pd-e
- catalyst_3650-24ps-s
- catalyst_3650-48td-e
- catalyst_9300-48un-a
- catalyst_3850-24xs
- catalyst_9300l-24p-4g-e
- 1100-8p_integrated_services_router
- c9500-32qc
- catalyst_3850-24t-s
- 1111x-8p_integrated_services_router
- catalyst_3650-48ts-s
- catalyst_3650-8x24uq-l
- catalyst_3850-24s-e
- catalyst_3850-24u
- catalyst_8300-2n2s-6t
- catalyst_ie3400_heavy_duty_switch
- catalyst_3650
- catalyst_9300l-48p-4x-e
- 4461_integrated_services_router
- 1101-4p_integrated_services_router
- ess-3300-24t-ncp-a
- catalyst_3850-24t-e
- catalyst_8500
- asr_1013
- catalyst_3850-24xu-e
- catalyst_9300l-24t-4g-e
- catalyst_3650-48tq-l
- catalyst_9300-48t-a
- catalyst_3650-24pdm-e
- catalyst_3850-24xu
- catalyst_3650-24pd-s
- c9500-16x
- catalyst_3650-12x48uz-e
- asr_1001-x_r
- asr_1000_series_route_processor_\(rp3\)
- catalyst_3850-24xu-s
- asr_1000
- 4000_integrated_services_router
- c9500-32c
- catalyst_9300-48u-a
- catalyst_3850-24p-l
- catalyst_8540msr
- catalyst_3650-12x48fd-s
- catalyst_9800
- ios
- catalyst_3850-48pw-s
- c8200l-1n-4t
- asr_1000-esp100
- catalyst_3650-12x48uz-s
- catalyst_3650-48td-s
- catalyst_9300-24ux-e
- asr_1000_series_route_processor_\(rp2\)
- 8808
- ess-3300-24t-con-a
- catalyst_8510msr
- catalyst_3650-24pd
- asr_1002-x
- catalyst_3850-48u-s
- catalyst_9300l-48t-4g-e
- catalyst_3650-48fs-e
- catalyst_3650-48pd-s
- catalyst_3650-48pq-e
- catalyst_9300-48s-a
- catalyst_9300l-48p-4x-a
- isrv
- catalyst_3650-48pd-l
- catalyst_3650-24ts-e
- catalyst_3650-48fq-e
- catalyst_3650-48ps-e
- 4451_integrated_services_router
- 1000_integrated_services_router
- catalyst_3650-48ts-l
- catalyst_3650-8x24uq
- catalyst_3850-48f-e
- catalyst_9300-48uxm-a
- catalyst_9400
- catalyst_3650-12x48uz-l
- catalyst_3850-48p-s
- catalyst_9800-cl
- catalyst_9300l-24t-4x-a
- c8200-1n-4t
- catalyst_9800-80
- 1109_integrated_services_router
- catalyst_3850-48p-e
- catalyst_3650-24pd-l
- catalyst_ie3200_rugged_switch
- asr_1001-hx_r
- catalyst_9600
- catalyst_3850-24t-l
- 8800_8-slot
- catalyst_3650-12x48uq-s
- catalyst_3650-24pdm-s
- asr_1001
- catalyst_3650-24ps-e
- catalyst_3650-48tq-s
- 1109-2p_integrated_services_router
- 4331_integrated_services_router
- catalyst_3650-12x48uz
- catalyst_ie3300_rugged_switch
- catalyst_3850-48xs-e
- ess-3300-con-a
- catalyst_3650-48fd-l
- catalyst_9500
- catalyst_3850-24s-s
- 1100-4g\/6g_integrated_services_router
- 1111x_integrated_services_router
- catalyst_3850-16xs-e
- catalyst_9300-48un-e
- catalyst_9300l-48p-4g-e
- catalyst_3650-48pq-s
- asr_1002_fixed_router
- catalyst_9300-24ux-a
- catalyst_9300-48uxm-e
- catalyst_8540csr
- 1160_integrated_services_router
- catalyst_3850-24xu-l
- catalyst_9800-80_wireless_controller
- 4451-x_integrated_services_router
- catalyst_3650-48fs-l
- catalyst_cg418-e
- catalyst_3850-24xs-e
- asr_1009-x
- catalyst_cg522-e
- catalyst_3850-48t-s
- catalyst_9300-24u-a
- catalyst_3850-48xs-f-e
- catalyst_3850-12x48u
- 8812
- c9500-24y4c
- catalyst_3850-nm-2-40g
- ios_xe
- catalyst_3650-24pd-e
- 8800_4-slot
- catalyst_3650-48tq-e
- catalyst_3850-48t-l
- catalyst_ie3400_rugged_switch
- catalyst_3650-48pq-l
- c9500-48y4c
- catalyst_3850-48p-l
- catalyst_3850-12xs-s
- catalyst_8300-1n1s-4t2x
- catalyst_9300l-48t-4x-a
- catalyst_9300l-24p-4g-a
- catalyst_3650-12x48fd-e
- catalyst_9800-l
- asr_1001-x
- catalyst_9800-40
- catalyst_3850-24u-l
- catalyst_3850-24xs-s
- ess-3300-24t-ncp-e
- asr_1006
- catalyst_3650-12x48uq
- catalyst_3650-24td-s
- catalyst_3650-48fq-s
- catalyst_3650-48fs-s
- catalyst_3850-24p-s
- 8800_12-slot
- catalyst_3850-48u-e
- catalyst_3650-48ps-l
- 111x_integrated_services_router
- c9500-24q
- catalyst_8300-1n1s-6t
- catalyst_9300-24t-a
- catalyst_9300l_stack
- 1109-4p_integrated_services_router
- catalyst_9800_embedded_wireless_controller
- esr6300
- ess-3300-ncp-a
- catalyst_3850-12xs-e
- c9500-12q
- catalyst_3650-8x24pd-s
- catalyst_3650-48ts-e
- 4431_integrated_services_router
- catalyst_9410r
- catalyst_8300-2n2s-4t2x
- 1120_integrated_services_router
- catalyst_3650-12x48uq-l
- catalyst_3650-12x48ur
- 4221_integrated_services_router
- catalyst_8500l
- catalyst_3850-24u-e
- catalyst_9300-48u-e
- catalyst_9300-24s-a
- cbr-8
- catalyst_9300-48t-e
- catalyst_3650-8x24pd-l
- catalyst_9400_supervisor_engine-1
- catalyst_3650-48ps-s
- 8800_18-slot
- catalyst_3850-32xs-s
- 8818
- catalyst_3650-24pdm-l
- catalyst_3850-48xs
- asr_1001-hx
- catalyst_3650-24pdm
- catalyst_3650-48fq-l
- catalyst_3850-24p-e
- catalyst_9800-l-c
- catalyst_3850-48u
- catalyst_3850-48u-l
- csr_1000v
- catalyst_3650-48fqm
- catalyst_9300l
- catalyst_9300-24p-a
- catalyst_9300-48s-e
- catalyst_3650-24ps-l
- catalyst_3650-8x24uq-s
- catalyst_9300-24p-e
- catalyst_3650-48fq
- catalyst_9600_supervisor_engine-1
- catalyst_3650-48fd-s
- catalyst_3650-48fqm-e
- catalyst_9300l-24p-4x-a
- catalyst_3650-24td-l
- catalyst_3650-48td-l
- asr_1002-x_r
- 4321_integrated_services_router
- catalyst_9800-l-f
- catalyst_9800-40_wireless_controller
- asr_1000-x
- asr_1002-hx
- catalyst_9300l-24p-4x-e
- ess-3300-24t-con-e
- catalyst_3850-48xs-s
- catalyst_9300-48p-a
- catalyst_9300-24u-e
- catalyst_9300l-48t-4x-e
- ess-3300-con-e
- catalyst_3650-48fqm-l
- catalyst_3850-12s-e
- catalyst_3850-24u-s
- catalyst_3650-8x24uq-e
- catalyst_9300l-48p-4g-a
- catalyst_9200
- catalyst_9300-24t-e
- catalyst_3650-24ts-s
- catalyst_3850-12s-s
- catalyst_3650-12x48ur-e