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CVE-2024-20259

HIGHCVSS 8.6/10EPSS 0.82%

Last modified

CVE-2024-20259 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a crafted IPv4 DHCP request packet being mishandled when endpoint analytics are enabled. An attacker could exploit this vulnerability by sending a crafted DHCP request through an affected device. EPSS estimates a 0.82% chance of exploitation in the next 30 days.

Description

A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a crafted IPv4 DHCP request packet being mishandled when endpoint analytics are enabled. An attacker could exploit this vulnerability by sending a crafted DHCP request through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: The attack vector is listed as network because a DHCP relay anywhere on the network could allow exploits from networks other than the adjacent one.

Metrics

CVSS 3.1
8.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS Probability
0.82%

52.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xe17.1.1
CiscoIos Xe17.1.1a
CiscoIos Xe17.1.1s
CiscoIos Xe17.1.1t
CiscoIos Xe17.1.3
CiscoIos Xe17.2.1
CiscoIos Xe17.2.1a
CiscoIos Xe17.2.1r
CiscoIos Xe17.2.1v
CiscoIos Xe17.2.2
CiscoIos Xe17.2.3
CiscoIos Xe17.3.1
CiscoIos Xe17.3.1a
CiscoIos Xe17.3.1w
CiscoIos Xe17.3.1x
CiscoIos Xe17.3.1z
CiscoIos Xe17.3.2
CiscoIos Xe17.3.2a
CiscoIos Xe17.3.3
CiscoIos Xe17.3.4
CiscoIos Xe17.3.4a
CiscoIos Xe17.3.4b
CiscoIos Xe17.3.4c
CiscoIos Xe17.3.5
CiscoIos Xe17.3.5a
CiscoIos Xe17.3.5b
CiscoIos Xe17.3.6
CiscoIos Xe17.3.7
CiscoIos Xe17.3.8
CiscoIos Xe17.3.8a
CiscoIos Xe17.4.1
CiscoIos Xe17.4.1a
CiscoIos Xe17.4.1b
CiscoIos Xe17.4.2
CiscoIos Xe17.4.2a
CiscoIos Xe17.5.1
CiscoIos Xe17.5.1a
CiscoIos Xe17.6.1
CiscoIos Xe17.6.1a
CiscoIos Xe17.6.1w
CiscoIos Xe17.6.1x
CiscoIos Xe17.6.1y
CiscoIos Xe17.6.1z
CiscoIos Xe17.6.1z1
CiscoIos Xe17.6.2
CiscoIos Xe17.6.3
CiscoIos Xe17.6.3a
CiscoIos Xe17.6.4
CiscoIos Xe17.6.5
CiscoIos Xe17.6.5a

Showing 50 of 80 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20259?
A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a crafted IPv4 DHCP request packet being mishandled when endpoint analytics are enabled. An attacker could exploit this vulnerability by sending a crafted DHCP request through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: The attack vector is listed as network because a DHCP relay anywhere on the network could allow exploits from networks other than the adjacent one.
How severe is CVE-2024-20259?
CVE-2024-20259 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20259?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20259?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST