Juniper Junos OS Evolved prior 23.4R2-EVO on ACX7000 Packet Forwarding Engine communication channel to intended endpoints

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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Juniper Junos OS Evolved on ACX7000 and classified as critical. Impacted is an unknown function of the component Packet Forwarding Engine. This manipulation causes communication channel to intended endpoints. This vulnerability is tracked as CVE-2024-47490. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Juniper Junos OS Evolved on ACX7000. It has been declared as critical. Affected by this vulnerability is an unknown part of the component Packet Forwarding Engine. The manipulation with an unknown input leads to a communication channel to intended endpoints vulnerability. The CWE definition for the vulnerability is CWE-923. The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint. As an impact it is known to affect integrity, and availability. The summary by CVE is:

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, network based attacker to cause increased consumption of resources, ultimately resulting in a Denial of Service (DoS). When specific transit MPLS packets are received by the PFE, these packets are internally forwarded to the Routing Engine (RE), rather than being handled appropriately. Continuous receipt of these MPLS packets causes resources to be exhausted. MPLS config is not required to be affected by this issue. This issue affects Junos OS Evolved ACX 7000 Series: * All versions before 21.4R3-S9-EVO, * 22.2-EVO before 22.2R3-S4-EVO, * 22.3-EVO before 22.3R3-S3-EVO, * 22.4-EVO before 22.4R3-S2-EVO, * 23.2-EVO before 23.2R2-EVO, * 23.4-EVO before 23.4R1-S1-EVO, 23.4R2-EVO.

It is possible to read the advisory at supportportal.juniper.net. This vulnerability is known as CVE-2024-47490 since 09/25/2024. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/26/2026).

The vulnerability scanner Nessus provides a plugin with the ID 208678 (Juniper Junos OS Vulnerability (JSA88115)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 21.4R3-S9-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S2-EVO, 23.2R2-EVO, 23.4R1-S1-EVO or 23.4R2-EVO eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (208678). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Juniper

Name

Junos OS Evolved

License

commercial

Website

Vendor: https://www.juniper.net/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

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

CNA Base Score: 8.2
CNA Vector (juniper): 🔍

CVSSv2info

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

Exploitinginfo

Class: Communication channel to intended endpoints
CWE: CWE-923
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 208678
Nessus Name: Juniper Junos OS Vulnerability (JSA88115)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Junos OS Evolved 21.4R3-S9-EVO/22.2R3-S4-EVO/22.3R3-S3-EVO/22.4R3-S2-EVO/23.2R2-EVO/23.4R1-S1-EVO/23.4R2-EVO

Timelineinfo

09/25/2024 🔍
10/11/2024 +16 days 🔍
10/11/2024 +0 days 🔍
01/26/2026 +472 days 🔍

Sourcesinfo

Vendor: juniper.net

Advisory: JSA83009
Status: Confirmed

CVE: CVE-2024-47490 (🔍)
GCVE (CVE): GCVE-0-2024-47490
GCVE (VulDB): GCVE-100-280087

Entryinfo

Created: 10/11/2024 18:08
Updated: 01/26/2026 20:02
Changes: 10/11/2024 18:08 (77), 10/12/2024 03:27 (2), 01/26/2026 20:02 (1)
Complete: 🔍
Cache ID: 216::103