Cisco IOS XE 17.11.99SW/17.12.1/17.12.1a IPv4 Fragmentation resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XE 17.11.99SW/17.12.1/17.12.1a and classified as critical. Impacted is an unknown function of the component IPv4 Fragmentation Handler. Such manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2024-20467. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS XE 17.11.99SW/17.12.1/17.12.1a and classified as critical. Affected by this issue is an unknown code of the component IPv4 Fragmentation Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. CVE summarizes:

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.

The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is handled as CVE-2024-20467 since 11/08/2023. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/04/2024).

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CNA Base Score: 8.6
CNA Vector (cisco): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/08/2023 🔍
09/25/2024 +321 days 🔍
09/25/2024 +0 days 🔍
10/04/2024 +9 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-cpp-vfr-dos-nhHKGgO
Status: Confirmed

CVE: CVE-2024-20467 (🔍)
GCVE (CVE): GCVE-0-2024-20467
GCVE (VulDB): GCVE-100-278492
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 09/25/2024 18:48
Updated: 10/04/2024 02:32
Changes: 09/25/2024 18:48 (65), 10/04/2024 02:32 (12)
Complete: 🔍
Cache ID: 216::103

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