{"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":"-0001-11-30T06:00:00","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":"<strong>CVE-2024-21612: Denial of Service Vulnerability in Juniper Networks&#8217; Junos OS Evolved<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>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&#8217; 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<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2024-21612<br \/>\nSeverity: High (7.5)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: Denial of Service, potential system compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1217117615\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Junos OS Evolved | Versions earlier than 21.2R3-S7-EVO<br \/>\nJunos OS Evolved | 21.3 versions earlier than 21.3R3-S5-EVO<br \/>\nJunos OS Evolved | 21.4 versions earlier than 21.4R3-S5-EVO<br \/>\nJunos OS Evolved | 22.1 versions earlier than 22.1R3-S4-EVO<br \/>\nJunos OS Evolved | 22.2 versions earlier than 22.2R3-S3-EVO<br \/>\nJunos OS Evolved | 22.3 versions earlier than 22.3R3-EVO<br \/>\nJunos OS Evolved | 22.4 versions earlier than 22.4R2-EVO, 22.4R3-EVO<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>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<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3017497807\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Here is a conceptual example of how this vulnerability might be exploited using a TCP packet:<\/p>\n<pre><code class=\"\" data-line=\"\">import socket\n# Target IP and port\ntarget_ip = &quot;target.example.com&quot;\ntarget_port = 12345 # Replace with OFP service port\n# Malicious packet\nmalicious_packet = &quot;...&quot; # 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<p>Please note that this is a conceptual example and the specific malicious TCP packet is not provided.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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&#8217; 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 [&hellip;]<\/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,"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":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/86117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=86117"}],"version-history":[{"count":0,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/86117\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=86117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=86117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=86117"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=86117"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=86117"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=86117"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=86117"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=86117"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=86117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}