{"id":55321,"date":"2025-06-27T02:07:55","date_gmt":"2025-06-27T02:07:55","guid":{"rendered":""},"modified":"2025-10-03T12:32:29","modified_gmt":"2025-10-03T18:32:29","slug":"cve-2025-22239-arbitrary-event-injection-vulnerability-in-salt-master","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-22239-arbitrary-event-injection-vulnerability-in-salt-master\/","title":{"rendered":"<strong>CVE-2025-22239: Arbitrary Event Injection Vulnerability in Salt Master<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is continuously evolving and each new vulnerability found, such as CVE-2025-22239, gives us a glimpse of the increasing complexity of the threats we face. This vulnerability affects Salt Master, a popular automation and configuration management software.<br \/>\nAt its core, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6102-critical-os-command-injection-vulnerability-in-wifi-soft-unibox-controller\/\"  data-wpil-monitor-id=\"61665\">vulnerability allows for arbitrary event injection<\/a>. It specifically affects the &#8220;_minion_event&#8221; method, enabling an authorized minion (the term used for nodes managed by the Salt Master) to send arbitrary events onto the Salt Master&#8217;s event bus. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49794-critical-use-after-free-vulnerability-in-libxml2\/\"  data-wpil-monitor-id=\"61645\">vulnerability is critical<\/a> due to the potential system compromise or data leakage it could lead to.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-22239<br \/>\nSeverity: High &#8211; CVSS Score 8.1<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49415-path-traversal-vulnerability-in-fw-gallery-with-potential-for-system-compromise\/\"  data-wpil-monitor-id=\"62631\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-313386066\" 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>Salt Master | All <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49137-critical-vulnerability-in-hax-cms-php-prior-to-version-11-0-0\/\"  data-wpil-monitor-id=\"61964\">versions prior<\/a> to the patched release<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit works by taking advantage of the &#8220;_minion_event&#8221; method in Salt Master. An authorized minion can use this method to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22236-minion-event-bus-authorization-bypass-vulnerability-posing-serious-security-threats\/\"  data-wpil-monitor-id=\"63316\">inject arbitrary events<\/a> onto the event bus of the Salt Master. This can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49181-unauthorized-api-endpoint-access-leading-to-denial-of-service-and-data-leakage\/\"  data-wpil-monitor-id=\"61704\">lead to potential system compromise or even data<\/a> leakage, as the arbitrary events could include malicious code or commands.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3777362425\" 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 the vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">salt &#039;*&#039; event.send &#039;salt\/master\/eventbus\/inject&#039; &#039;{ &quot;malicious_payload&quot;: &quot;...&quot; }&#039;<\/code><\/pre>\n<p>In this example, the command is sent to all minions (as indicated by &#8216;*&#8217;), instructing them to send an event (event.send) to the Salt Master&#8217;s event bus. The event contains a malicious payload that could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49847-buffer-overflow-vulnerability-in-llama-cpp-leading-to-potential-code-execution\/\"  data-wpil-monitor-id=\"62630\">potentially compromise the system or lead<\/a> to data leakage.<\/p>\n<p><strong>Mitigation and Prevention<\/strong><\/p>\n<p>The best line of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20217-denial-of-service-vulnerability-in-snort-3-detection-engine-of-cisco-secure-firewall-threat-defense-software\/\"  data-wpil-monitor-id=\"77092\">defense against this vulnerability<\/a> is to apply the vendor patch as soon as it is available. If for some reason, immediate patching is not feasible, the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation.<br \/>\nRemember, it is crucial to maintain a proactive <a href=\"https:\/\/www.ameeba.com\/blog\/introducing-the-ameeba-cybersecurity-group-chat\/\"  data-wpil-monitor-id=\"88414\">cybersecurity<\/a> posture. Regularly patching and updating your systems, as well as employing robust <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-46916-critical-vulnerability-in-diebold-nixdorf-vynamic-security-suite-allows-system-compromise\/\"  data-wpil-monitor-id=\"88415\">security systems<\/a>, can go a long way in securing your digital infrastructure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is continuously evolving and each new vulnerability found, such as CVE-2025-22239, gives us a glimpse of the increasing complexity of the threats we face. This vulnerability affects Salt Master, a popular automation and configuration management software. At its core, the vulnerability allows for arbitrary event injection. It specifically affects the &#8220;_minion_event&#8221; [&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-55321","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\/55321","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=55321"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55321\/revisions"}],"predecessor-version":[{"id":81226,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/55321\/revisions\/81226"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=55321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=55321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=55321"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=55321"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=55321"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=55321"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=55321"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=55321"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=55321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}