{"id":38270,"date":"2025-05-15T02:54:41","date_gmt":"2025-05-15T02:54:41","guid":{"rendered":""},"modified":"2025-09-26T20:58:51","modified_gmt":"2025-09-27T02:58:51","slug":"cve-2024-12378-unencrypted-data-transmission-vulnerability-in-arista-eos","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2024-12378-unencrypted-data-transmission-vulnerability-in-arista-eos\/","title":{"rendered":"<strong>CVE-2024-12378: Unencrypted Data Transmission Vulnerability in Arista EOS<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the cybersecurity realm, vulnerabilities are an open door to potential threats. Among the most recent vulnerabilities discovered, CVE-2024-12378 stands out due to its high severity and broad impact. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1909-authentication-bypass-vulnerability-in-buddyboss-platform-pro-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"43202\">vulnerability affects platforms<\/a> running Arista EOS with secure Vxlan configured. The cause of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36633-critical-privilege-escalation-vulnerability-in-tenable-agent-on-windows\/\"  data-wpil-monitor-id=\"61642\">vulnerability lies in the restarting of the Tunnelsec agent<\/a>, which results in packets being sent over the secure Vxlan tunnels in clear text. This unencrypted transmission of data could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4050-heap-corruption-in-google-chrome-devtools-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43066\">potentially lead to system<\/a> compromise or data leakage. Given the significant repercussions, understanding and mitigating this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4954-critical-file-upload-vulnerability-in-axle-demo-importer-wordpress-plugin\/\"  data-wpil-monitor-id=\"60725\">vulnerability is of paramount importance<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2024-12378<br \/>\nSeverity: Critical, CVSS score 9.1<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43532\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1980416383\" 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>Arista EOS | All versions with secure Vxlan configured<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The vulnerability is triggered when the Tunnelsec agent on platforms running <a href=\"https:\/\/www.ameeba.com\/blog\/boosting-digital-security-leveraging-the-european-vulnerability-database-enisa\/\"  data-wpil-monitor-id=\"44931\">Arista<\/a> EOS with secure Vxlan configured is restarted. During this process, the system inadvertently sends packets over the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54887-significant-security-vulnerability-in-jwe-ruby-encryption-implementation\/\"  data-wpil-monitor-id=\"82699\">secure Vxlan tunnels without encryption<\/a>. Consequently, an attacker could potentially intercept these packets and gain <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47733-server-side-request-forgery-in-microsoft-power-apps-leads-to-unauthorized-information-disclosure\/\"  data-wpil-monitor-id=\"44909\">unauthorized access to sensitive information<\/a>. This could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4347-d-link-router-buffer-overflow-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"43593\">lead to unauthorized system<\/a> access, system compromise, or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3298977340\" 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>While an exact <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-37446-arbitrary-code-execution-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42956\">code to exploit this vulnerability<\/a> cannot be provided due to ethical considerations, a conceptual idea can be given. An attacker would typically use a packet sniffer tool in a man-in-the-middle attack to intercept the unencrypted packets. The pseudocode for such a situation could look like this:<\/p>\n<pre><code class=\"\" data-line=\"\">import packet_sniffer\ndef exploit(target):\nsniffer = packet_sniffer.Sniffer(target)\nwhile True:\npacket = sniffer.sniff()\nif packet is not None and packet.is_vxlan() and not packet.is_encrypted():\nprint(&quot;Intercepted unencrypted packet: &quot;, packet)\nexploit(&quot;target.example.com&quot;)<\/code><\/pre>\n<p>This pseudocode represents an attacker using a packet sniffing tool to continuously monitor <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31214-a-critical-network-traffic-interception-vulnerability-in-ios-and-ipados\/\"  data-wpil-monitor-id=\"47703\">network traffic<\/a>. If an unencrypted Vxlan packet is detected, it is captured and analyzed for potential <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5893-unauthenticated-access-and-exposure-of-sensitive-information-in-smart-parking-management-system\/\"  data-wpil-monitor-id=\"59772\">sensitive information<\/a>.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users of Arista EOS with secure Vxlan configured should immediately apply the vendor-provided patch. If the patch cannot be applied immediately, a temporary mitigation solution would be to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31100-unrestricted-file-upload-leads-to-web-shell-deployment-in-mojoomla-school-management\/\"  data-wpil-monitor-id=\"84746\">deploy a web<\/a> application firewall (WAF) or intrusion detection system (IDS) to monitor and block potential malicious traffic. Regular security <a href=\"https:\/\/www.ameeba.com\/blog\/defense-contractors-taking-early-action-for-cmmc-audits-a-cybersecurity-perspective\/\"  data-wpil-monitor-id=\"45771\">audits and monitoring can also help in early<\/a> detection and prevention of such vulnerabilities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the cybersecurity realm, vulnerabilities are an open door to potential threats. Among the most recent vulnerabilities discovered, CVE-2024-12378 stands out due to its high severity and broad impact. The vulnerability affects platforms running Arista EOS with secure Vxlan configured. The cause of this vulnerability lies in the restarting of the Tunnelsec agent, which [&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":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-38270","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38270","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=38270"}],"version-history":[{"count":14,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38270\/revisions"}],"predecessor-version":[{"id":77531,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/38270\/revisions\/77531"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=38270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=38270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=38270"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=38270"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=38270"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=38270"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=38270"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=38270"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=38270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}