{"id":86117,"date":"2025-12-24T13:45:54","date_gmt":"2025-12-24T13:45:54","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2024-21612-denial-of-service-vulnerability-in-juniper-networks-junos-os-evolved","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-21612-denial-of-service-vulnerability-in-juniper-networks-junos-os-evolved\/","title":{"rendered":"CVE-2024-21612: Denial of Service Vulnerability in Juniper Networks’ Junos OS Evolved<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The cybersecurity landscape is in a constant state of flux, with new vulnerabilities emerging regularly. One such vulnerability, CVE-2024-21612, has been identified in Juniper Networks’ Junos OS Evolved. This security flaw has the potential to cause considerable harm, allowing an attacker to cause a Denial of Service (DoS) condition that could disrupt services and compromise system integrity.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2024-21612
\nSeverity: High (7.5)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Denial of Service, potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Junos OS Evolved | Versions earlier than 21.2R3-S7-EVO
\nJunos OS Evolved | 21.3 versions earlier than 21.3R3-S5-EVO
\nJunos OS Evolved | 21.4 versions earlier than 21.4R3-S5-EVO
\nJunos OS Evolved | 22.1 versions earlier than 22.1R3-S4-EVO
\nJunos OS Evolved | 22.2 versions earlier than 22.2R3-S3-EVO
\nJunos OS Evolved | 22.3 versions earlier than 22.3R3-EVO
\nJunos OS Evolved | 22.4 versions earlier than 22.4R2-EVO, 22.4R3-EVO<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability stems from an improper handling of syntactically invalid structures within the Object Flooding Protocol (OFP) service. An attacker can exploit this flaw by sending specific TCP packets to an open OFP port. Upon receipt of these packets, the OFP service crashes and triggers a restart of the Routine Engine (RE). Continuous receipt of these specific packets leads to a sustained Denial of Service (DoS) condition.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here is a conceptual example of how this vulnerability might be exploited using a TCP packet:<\/p>\n

import socket\n# Target IP and port\ntarget_ip = \"target.example.com\"\ntarget_port = 12345 # Replace with OFP service port\n# Malicious packet\nmalicious_packet = \"...\" # Replace with specific TCP packet causing crash\n# Create a TCP\/IP socket\nsock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)\n# Connect to the target\nsock.connect((target_ip, target_port))\n# Send the malicious packet\nsock.sendall(malicious_packet)\n# Close the socket\nsock.close()<\/code><\/pre>\n
Please note that this is a conceptual example and the specific malicious TCP packet is not provided.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity landscape is in a constant state of flux, with new vulnerabilities emerging regularly. One such vulnerability, CVE-2024-21612, has been identified in Juniper Networks’ Junos OS Evolved. This security flaw has the potential to cause considerable harm, allowing an attacker to cause a Denial of Service (DoS) condition that could disrupt services and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-86117","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t