CVE-2024-20480 — Operator Precedence Logic Error in Cisco IOS XE Software

CWE-783 — Operator Precedence Logic Error CWE-670 — Always-Incorrect Control Flow Implementation CWE-20 — Improper Input Validation5 documents5 sources

Severity

8.6HIGHNVD

EPSS

1.2%

top 21.44%

CISA KEV

Not in KEV

Exploit

No known exploits

Affected products

Cisco IOS XE Software Cisco IOS XE

Timeline

PublishedSep 25

Latest updateJan 11

Description

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 succe…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶CVEListV5cisco/cisco_ios_xe_software205 versions+204

▶NVDcisco/ios_xe205 versions+204

🔴Vulnerability Details

CVEList

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 unauthen↗2024-09-25

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GHSA

GHSA-2g8x-wxp8-jhpg: A vulnerability in the DHCP Snooping feature of Cisco IOS XE Software on Software-Defined Access (SD-Access) fabric edge nodes could allow an unauthen↗2024-09-25

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📋Vendor Advisories

Red Hat

kernel: ALSA: memalloc: prefer dma_mapping_error() over explicit address checking↗2025-01-11

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Cisco

Cisco IOS XE Software SD-Access Fabric Edge Node Denial of Service Vulnerability↗2024-09-25

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