CVE-2020-3479
Detail
Modified This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
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.
Metrics
CVSS Version 4.0
CVSS Version 3.x
CVSS Version 2.0
NVD enrichment efforts reference publicly available information to associate
vector strings. CVSS information contributed by other sources is also
displayed.
CVSS 4.0 Severity and Vector Strings:
NVD assessment
not yet provided.
CVSS 3.x Severity and Vector Strings:
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
CVSS 2.0 Severity and Vector Strings:
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
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Weakness Enumeration
CWE-ID
CWE Name
Source
CWE-400
Uncontrolled Resource Consumption
NIST
CWE-20
Improper Input Validation
Cisco Systems, Inc.
Change History
19 change records found show changes
CVE Modified by CVE 11/21/2024 12:31:09 AM
Action
Type
Old Value
New Value
Added
Reference
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF
CVE Modified by Cisco Systems, Inc. 5/14/2024 3:11:37 AM
Action
Type
Old Value
New Value
CVE Modified by Cisco Systems, Inc. 11/06/2023 10:22:47 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
Removed
CVSS V3
Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:R/S:C/C:N/I:N/A:H
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1100_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1101_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1109_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:111x_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1111x_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1120_integrated_services_router:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 5/22/2023 2:57:24 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:1160_integrated_services_router:-:*:*:*:*:*:*:*
Reanalysis by NIST 10/07/2021 4:11:30 PM
Action
Type
Old Value
New Value
Changed
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:1100_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:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1009-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160_router:-:*:*:*:*:*:*:*
AND
OR
*cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:1100_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:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1009-x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:11 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1002-hx_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1002-hx:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:12 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1001-x_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1001-x:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:13 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1013_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1013:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:16 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1002-x_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1002-x:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:18 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1006_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1006:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:19 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1004_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1004:-:*:*:*:*:*:*:*
CPE Deprecation Remap by NIST 10/05/2021 10:51:20 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
OR
*cpe:2.3:h:cisco:asr_1001-hx_router:-:*:*:*:*:*:*:*
OR
*cpe:2.3:h:cisco:asr_1001-hx:-:*:*:*:*:*:*:*
Initial Analysis by NIST 10/06/2020 9:23:58 AM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Added
CWE
NIST CWE-400
Added
CPE Configuration
AND
OR
*cpe:2.3:o:cisco:ios:-:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:1100_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:4331_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4351_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4431_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4451-x_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:4461_integrated_services_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-hx_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1001-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-hx_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1002-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1004_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1006_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1009-x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:asr_1013_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:cloud_services_router_1000v:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1100_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1101_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1109_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1111x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_111x_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1120_router:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:isr_1160_router:-:*:*:*:*:*:*:*
Changed
Reference Type
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF No Types Assigned
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-bgp-evpn-dos-LNfYJxfF Vendor Advisory
Quick Info
CVE Dictionary Entry: CVE-2020-3479 NVD
Published Date: 09/24/2020 NVD
Last Modified: 11/21/2024
Source: Cisco Systems, Inc.
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