VDB-256733 · CVE-2024-20327 · GCVE-0-2024-20327

Cisco IOS XR on ASR 9000 PPPoE denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS XR on ASR 9000. This issue affects some unknown processing of the component PPPoE. The manipulation leads to denial of service. This vulnerability is listed as CVE-2024-20327. The attack must be carried out from within the local network. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS XR on ASR 9000 (Router Operating System) (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component PPPoE. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was presented 03/13/2024 as cisco-sa-iosxr-pppma-JKWFgneW. The advisory is shared at sec.cloudapps.cisco.com. The identification of this vulnerability is CVE-2024-20327 since 11/08/2023. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Router Operating System

Vendor

Cisco

Name

IOS XR

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.4
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/08/2023 🔍
03/13/2024 +126 days 🔍
03/13/2024 +0 days 🔍
04/15/2024 +33 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-iosxr-pppma-JKWFgneW
Status: Confirmed

CVE: CVE-2024-20327 (🔍)
GCVE (CVE): GCVE-0-2024-20327
GCVE (VulDB): GCVE-100-256733
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 03/13/2024 17:24
Updated: 04/15/2024 08:38
Changes: 03/13/2024 17:24 (40), 04/15/2024 08:37 (15), 04/15/2024 08:38 (12)
Complete: 🔍
Cache ID: 216::103