CVE-2024-20480

A vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on Software-Defined Access (SD-Access) fabric edge nodes could allow an unauthenticated, remote attacker to cause high CPU utilization on an affected device, resulting in a denial of service (DoS) condition that requires a manual reload to recover.  

 This vulnerability is due to improper handling of IPv4 DHCP packets. An attacker could exploit this vulnerability by sending certain IPv4 DHCP packets to an affected device. A successful exploit could allow the attacker to cause the device to exhaust CPU resources and stop processing traffic, resulting in a DoS condition that requires a manual reload to recover.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
ciscoCNA
8.6 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CISA-ADPADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
VendorProductVersion
ciscoios_xe
16.1.1
ciscoios_xe
16.1.2
ciscoios_xe
16.1.3
ciscoios_xe
16.2.1
ciscoios_xe
16.2.2
ciscoios_xe
16.3.1
ciscoios_xe
16.3.1a:a
ciscoios_xe
16.3.2
ciscoios_xe
16.3.3
ciscoios_xe
16.3.4
ciscoios_xe
16.3.5
ciscoios_xe
16.3.5b:b
ciscoios_xe
16.3.6
ciscoios_xe
16.3.7
ciscoios_xe
16.3.8
ciscoios_xe
16.3.9
ciscoios_xe
16.3.10
ciscoios_xe
16.3.11
ciscoios_xe
16.4.1
ciscoios_xe
16.4.2
ciscoios_xe
16.4.3
ciscoios_xe
16.5.1
ciscoios_xe
16.5.1a:a
ciscoios_xe
16.5.1b:b
ciscoios_xe
16.5.2
ciscoios_xe
16.5.3
ciscoios_xe
16.6.1
ciscoios_xe
16.6.2
ciscoios_xe
16.6.3
ciscoios_xe
16.6.4
ciscoios_xe
16.6.4a:a
ciscoios_xe
16.6.5
ciscoios_xe
16.6.5a:a
ciscoios_xe
16.6.6
ciscoios_xe
16.6.7
ciscoios_xe
16.6.8
ciscoios_xe
16.6.9
ciscoios_xe
16.6.10
ciscoios_xe
16.7.1
ciscoios_xe
16.7.1a:a
ciscoios_xe
16.7.1b:b
ciscoios_xe
16.7.2
ciscoios_xe
16.7.3
ciscoios_xe
16.7.4
ciscoios_xe
16.8.1
ciscoios_xe
16.8.1a:a
ciscoios_xe
16.8.1b:b
ciscoios_xe
16.8.1c:c
ciscoios_xe
16.8.1d:d
ciscoios_xe
16.8.1e:e
ciscoios_xe
16.8.1s:s
ciscoios_xe
16.8.2
ciscoios_xe
16.8.3
ciscoios_xe
16.9.1
ciscoios_xe
16.9.1a:a
ciscoios_xe
16.9.1b:b
ciscoios_xe
16.9.1s:s
ciscoios_xe
16.9.2
ciscoios_xe
16.9.3
ciscoios_xe
16.9.3a:a
ciscoios_xe
16.9.4
ciscoios_xe
16.9.5
ciscoios_xe
16.9.5f:f
ciscoios_xe
16.9.6
ciscoios_xe
16.9.7
ciscoios_xe
16.9.8
ciscoios_xe
16.10.1
ciscoios_xe
16.10.1a:a
ciscoios_xe
16.10.1b:b
ciscoios_xe
16.10.1c:c
ciscoios_xe
16.10.1d:d
ciscoios_xe
16.10.1e:e
ciscoios_xe
16.10.1f:f
ciscoios_xe
16.10.1g:g
ciscoios_xe
16.10.1s:s
ciscoios_xe
16.10.2
ciscoios_xe
16.10.3
ciscoios_xe
16.11.1
ciscoios_xe
16.11.1a:a
ciscoios_xe
16.11.1b:b
ciscoios_xe
16.11.1s:s
ciscoios_xe
16.11.2
ciscoios_xe
16.12.1
ciscoios_xe
16.12.1a:a
ciscoios_xe
16.12.1c:c
ciscoios_xe
16.12.1s:s
ciscoios_xe
16.12.1t:t
ciscoios_xe
16.12.1w:w
ciscoios_xe
16.12.1x:x
ciscoios_xe
16.12.1y:y
ciscoios_xe
16.12.1z1:z1
ciscoios_xe
16.12.1z2:z2
ciscoios_xe
16.12.2
ciscoios_xe
16.12.2a:a
ciscoios_xe
16.12.2s:s
ciscoios_xe
16.12.3
ciscoios_xe
16.12.3a:a
ciscoios_xe
16.12.3s:s
ciscoios_xe
16.12.4
ciscoios_xe
16.12.4a:a
ciscoios_xe
16.12.5
ciscoios_xe
16.12.5a:a
ciscoios_xe
16.12.5b:b
ciscoios_xe
16.12.6
ciscoios_xe
16.12.6a:a
ciscoios_xe
16.12.7
ciscoios_xe
16.12.8
ciscoios_xe
16.12.9
ciscoios_xe
16.12.10
ciscoios_xe
16.12.10a:a
ciscoios_xe
16.12.11
ciscoios_xe
17.1.1
ciscoios_xe
17.1.1a:a
ciscoios_xe
17.1.1s:s
ciscoios_xe
17.1.1t:t
ciscoios_xe
17.1.3
ciscoios_xe
17.2.1
ciscoios_xe
17.2.1a:a
ciscoios_xe
17.2.1r:r
ciscoios_xe
17.2.1v:v
ciscoios_xe
17.2.2
ciscoios_xe
17.2.3
ciscoios_xe
17.3.1
ciscoios_xe
17.3.1a:a
ciscoios_xe
17.3.1w:w
ciscoios_xe
17.3.1x:x
ciscoios_xe
17.3.1z:z
ciscoios_xe
17.3.2
ciscoios_xe
17.3.2a:a
ciscoios_xe
17.3.3
ciscoios_xe
17.3.4
ciscoios_xe
17.3.4a:a
ciscoios_xe
17.3.4b:b
ciscoios_xe
17.3.4c:c
ciscoios_xe
17.3.5
ciscoios_xe
17.3.5a:a
ciscoios_xe
17.3.5b:b
ciscoios_xe
17.3.6
ciscoios_xe
17.3.7
ciscoios_xe
17.3.8
ciscoios_xe
17.3.8a:a
ciscoios_xe
17.4.1
ciscoios_xe
17.4.1a:a
ciscoios_xe
17.4.1b:b
ciscoios_xe
17.4.2
ciscoios_xe
17.4.2a:a
ciscoios_xe
17.5.1
ciscoios_xe
17.5.1a:a
ciscoios_xe
17.6.1
ciscoios_xe
17.6.1a:a
ciscoios_xe
17.6.1w:w
ciscoios_xe
17.6.1x:x
ciscoios_xe
17.6.1y:y
ciscoios_xe
17.6.1z:z
ciscoios_xe
17.6.1z1:z1
ciscoios_xe
17.6.2
ciscoios_xe
17.6.3
ciscoios_xe
17.6.3a:a
ciscoios_xe
17.6.4
ciscoios_xe
17.6.5
ciscoios_xe
17.6.5a:a
ciscoios_xe
17.6.6
ciscoios_xe
17.6.6a:a
ciscoios_xe
17.6.7
ciscoios_xe
17.7.1
ciscoios_xe
17.7.1a:a
ciscoios_xe
17.7.1b:b
ciscoios_xe
17.7.2
ciscoios_xe
17.8.1
ciscoios_xe
17.8.1a:a
ciscoios_xe
17.9.1
ciscoios_xe
17.9.1a:a
ciscoios_xe
17.9.1w:w
ciscoios_xe
17.9.1x:x
ciscoios_xe
17.9.1x1:x1
ciscoios_xe
17.9.1y:y
ciscoios_xe
17.9.1y1:y1
ciscoios_xe
17.9.2
ciscoios_xe
17.9.2a:a
ciscoios_xe
17.9.3
ciscoios_xe
17.9.3a:a
ciscoios_xe
17.9.4
ciscoios_xe
17.9.4a:a
ciscoios_xe
17.9.5
ciscoios_xe
17.9.5a:a
ciscoios_xe
17.9.5b:b
ciscoios_xe
17.10.1
ciscoios_xe
17.10.1a:a
ciscoios_xe
17.10.1b:b
ciscoios_xe
17.11.1
ciscoios_xe
17.11.1a:a
ciscoios_xe
17.11.99sw:sw
ciscoios_xe
17.12.1
ciscoios_xe
17.12.1a:a
ciscoios_xe
17.12.1w:w
ciscoios_xe
17.12.1x:x
ciscoios_xe
17.12.1y:y
ciscoios_xe
17.12.2
ciscoios_xe
17.12.2a:a
ciscoios_xe
17.12.3
ciscoios_xe
17.12.3a:a
ciscoios_xe
17.13.1
ciscoios_xe
17.13.1a:a
ciscoios_xe
17.14.1
ciscoios_xe
17.14.1a:a
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xe-sda-edge-dos-MBcbG9k