A vulnerability in the implementation of Multiprotocol Border Gateway Protocol (MP-BGP) for the Layer 2 VPN (L2VPN) Ethernet VPN (EVPN) address family in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to incorrect processing of Border Gateway Protocol (BGP) update messages that contain crafted EVPN attributes. An attacker could exploit this vulnerability by sending BGP update messages with specific, malformed attributes to an affected device. A successful exploit could allow the attacker to cause an affected device to crash, resulting in a DoS condition.
References
| Link | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
22 May 2023, 18:57
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Cisco 1120 Integrated Services Router
Cisco 1111x Integrated Services Router Cisco 111x Integrated Services Router Cisco 1109 Integrated Services Router Cisco 1101 Integrated Services Router Cisco 1160 Integrated Services Router |
|
| CPE | cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* |
cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:* |
07 Oct 2021, 20:11
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:h:cisco:isr_1160_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1009-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109_router:-:*:*:*:*:*:*:* |
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:* |
05 Oct 2021, 14:51
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:h:cisco:asr_1001-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006_router:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx_router:-:*:*:*:*:*:*:* |
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:* |
Information
Published : 2020-09-24 18:15
Updated : 2023-12-10 13:41
NVD link : CVE-2020-3479
Mitre link : CVE-2020-3479
CVE.ORG link : CVE-2020-3479
JSON object : View
Products Affected
cisco
- 4351_integrated_services_router
- ios
- 4431_integrated_services_router
- asr_1006
- 4331_integrated_services_router
- 4321_integrated_services_router
- asr_1002-x
- 1109_integrated_services_router
- cloud_services_router_1000v
- asr_1004
- ios_xe
- 1160_integrated_services_router
- 4461_integrated_services_router
- asr_1002-hx
- asr_1001-x
- asr_1013
- 1101_integrated_services_router
- 1120_integrated_services_router
- 4451-x_integrated_services_router
- asr_1006-x
- 4221_integrated_services_router
- 111x_integrated_services_router
- asr_1009-x
- 1111x_integrated_services_router
- asr_1001-hx
- 1100_integrated_services_router