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CVE-2024-21597

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CVE-2024-21597

Published: Jan 12, 2024

Modified: Jun 3, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

An Exposure of Resource to Wrong Sphere vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass the intended access restrictions. In an Abstracted Fabric (AF) scenario if routing-instances (RI) are configured, specific valid traffic destined to the device can bypass the configured lo0 firewall filters as it's received in the wrong RI context. This issue affects Juniper Networks Junos OS on MX Series: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S3; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R3; * 22.2 versions earlier than 22.2R3; * 22.3 versions earlier than 22.3R2.

VendorProductVersions

Juniper Networks

Junos OS

affected
0 - < 20.4R3-S9
affected
21.2 - < 21.2R3-S3
affected
21.4 - < 21.4R3-S5
affected
22.1 - < 22.1R3
affected
22.2 - < 22.2R3

+1 more versions

Weaknesses (CWE)

CWE-668

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

References

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