{"id":51182,"date":"2025-06-11T19:27:49","date_gmt":"2025-06-11T19:27:49","guid":{"rendered":""},"modified":"2025-09-09T02:35:52","modified_gmt":"2025-09-09T08:35:52","slug":"cve-2025-47827-critical-security-vulnerability-in-igel-os-allows-secure-boot-bypass","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-47827-critical-security-vulnerability-in-igel-os-allows-secure-boot-bypass\/","title":{"rendered":"<strong>CVE-2025-47827: Critical Security Vulnerability in IGEL OS allows Secure Boot Bypass<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In the constantly evolving world of cybersecurity, new vulnerabilities are discovered almost every day. One such vulnerability, identified as CVE-2025-47827, has been found in IGEL OS versions before 11. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-57783-xss-vulnerability-in-dot-desktop-application-allows-command-execution\/\"  data-wpil-monitor-id=\"57443\">vulnerability is significant because it allows<\/a> an attacker to bypass Secure Boot, a critical security feature designed to ensure that a system boots using only software that is trusted by the Original Equipment Manufacturer (OEM). The exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-47668-linux-kernel-vulnerability-leading-to-potential-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"57531\">vulnerability could lead to potential system compromise or data<\/a> leakage.<br \/>\nThe <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4700-critical-xss-vulnerability-discovered-in-gitlab-ce-ee\/\"  data-wpil-monitor-id=\"69807\">vulnerability was discovered<\/a> in IGEL OS, a power-packed, small and very secure Linux distribution that is widely used in thin clients, which makes it a high-risk issue. The fact that it can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52688-critical-vulnerability-allowing-root-command-injection-on-access-point\/\"  data-wpil-monitor-id=\"70079\">allow the mounting of a crafted root<\/a> filesystem from an unverified SquashFS image underscores the severity of this threat.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-47827<br \/>\nSeverity: High (8.4 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: High<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22040-race-condition-vulnerability-in-linux-kernel-resulting-in-potential-system-compromise\/\"  data-wpil-monitor-id=\"57909\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3987042149\" 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>IGEL OS | Before Version 11<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-45576-memory-corruption-vulnerability-in-ope-module-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"58255\">vulnerability resides in the igel-flash-driver module<\/a> of the IGEL OS. This module is responsible for verifying the cryptographic signature of the boot files. However, due to an error in the verification process, an attacker with high-level privileges can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22236-minion-event-bus-authorization-bypass-vulnerability-posing-serious-security-threats\/\"  data-wpil-monitor-id=\"63318\">bypass the Secure<\/a> Boot process.<br \/>\nThe attacker can craft a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43199-a-high-risk-permissions-issue-enabling-root-privileges-via-malicious-apps\/\"  data-wpil-monitor-id=\"80996\">malicious root<\/a> filesystem and mount it from an unverified SquashFS image. This allows the attacker to load untrusted code at system boot time, bypassing the integrity checks and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22041-linux-kernel-vulnerability-in-ksmbd-sessions-deregister-may-lead-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"57908\">leading to a potential system<\/a> compromise.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-848503300\" 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>Below is a conceptual example of how this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21480-memory-corruption-vulnerability-in-gpu-micronode-leads-to-unauthorized-command-execution\/\"  data-wpil-monitor-id=\"58497\">vulnerability might be exploited using a shell command:<\/a><\/p>\n<pre><code class=\"\" data-line=\"\"># Create a malicious SquashFS image\nmksquashfs malicious_root_fs malicious.sqsh\n# Mount the malicious image at boot time\necho &quot;\/dev\/sda1 \/ squashfs defaults 0 0&quot; &gt;&gt; \/etc\/fstab<\/code><\/pre>\n<p>In this example, `malicious_root_fs` is a directory containing the malicious root filesystem, and `malicious.sqsh` is the SquashFS image created from it. The second command mounts this image at boot time, effectively bypassing the Secure Boot <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21460-memory-corruption-vulnerability-in-guest-vm-buffer-processing-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"59005\">process and loading untrusted code into the system<\/a>.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>Users are advised to apply the patch provided by the vendor as soon as possible. If the vendor patch is not yet available or cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45984-critical-command-injection-vulnerability-detected-in-blink-routers\/\"  data-wpil-monitor-id=\"63319\">detect and block attempted exploits of this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In the constantly evolving world of cybersecurity, new vulnerabilities are discovered almost every day. One such vulnerability, identified as CVE-2025-47827, has been found in IGEL OS versions before 11. This vulnerability is significant because it allows an attacker to bypass Secure Boot, a critical security feature designed to ensure that a system boots using [&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":[88],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-51182","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51182","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=51182"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51182\/revisions"}],"predecessor-version":[{"id":73414,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/51182\/revisions\/73414"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=51182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=51182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=51182"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=51182"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=51182"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=51182"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=51182"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=51182"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=51182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}