CVE-2024-20467

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

A vulnerability in the implementation of the IPv4 fragmentation reassembly code in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to improper management of resources during fragment reassembly. An attacker could exploit this vulnerability by sending specific sizes of fragmented packets to an affected device or through a Virtual Fragmentation Reassembly (VFR)-enabled interface on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Note: This vulnerability affects Cisco ASR 1000 Series Aggregation Services Routers and Cisco cBR-8 Converged Broadband Routers if they are running Cisco IOS XE Software Release 17.12.1 or 17.12.1a.

*Credits: N/A

CVSS Scores

Ciscov3.1 8.6

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-11-08 CVE Reserved
2024-09-25 CVE Published
2024-09-25 CVE Updated
2024-09-28 First Exploit
2024-10-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-399: Resource Management Errors

CAPEC

References (2)

URL	Tag	Source
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cpp-vfr-dos-nhHKGgO

URL	Date	SRC
https://github.com/saler-cve/PoC-Exploit-CVE-2024-20467	2024-09-28

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Cisco IOS XE Software Search vendor "Cisco" for product "Cisco IOS XE Software"				17.12.1 Search vendor "Cisco" for product "Cisco IOS XE Software" and version "17.12.1"		en		Affected
Cisco Search vendor "Cisco"		Cisco IOS XE Software Search vendor "Cisco" for product "Cisco IOS XE Software"				17.12.1 Search vendor "Cisco" for product "Cisco IOS XE Software" and version "17.12.1"		en		Affected
Cisco Search vendor "Cisco"		Cisco IOS XE Software Search vendor "Cisco" for product "Cisco IOS XE Software"				17.11.99 Search vendor "Cisco" for product "Cisco IOS XE Software" and version "17.11.99"		en		Affected