{"id":26955,"date":"2025-04-19T10:14:47","date_gmt":"2025-04-19T10:14:47","guid":{"rendered":""},"modified":"2025-05-22T11:40:41","modified_gmt":"2025-05-22T11:40:41","slug":"cve-2025-23389-improper-access-control-vulnerability-in-suse-rancher","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-23389-improper-access-control-vulnerability-in-suse-rancher\/","title":{"rendered":"<strong>CVE-2025-23389: Improper Access Control Vulnerability in SUSE Rancher<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>We are highlighting a significant cybersecurity vulnerability identified as CVE-2025-23389. This vulnerability is an Improper Access Control issue that affects the SUSE Rancher. This software flaw allows a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1950-local-user-command-execution-vulnerability-in-ibm-hardware-management-console\/\"  data-wpil-monitor-id=\"40549\">local user<\/a> to impersonate other identities through the SAML Authentication process upon their first login. The affected users could be anyone using the vulnerable versions of the SUSE Rancher software, and the impact is substantial as it could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-33033-audio-playback-memory-corruption-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"31238\">potentially lead to system<\/a> compromise or data leakage. Considering the high <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-52307-high-severity-stack-overflow-vulnerability-in-paddlepaddle-prior-to-version-2-6-0\/\"  data-wpil-monitor-id=\"33950\">severity of this vulnerability<\/a>, immediate action is necessary to prevent potential cyber threats.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-23389<br \/>\nSeverity: High (8.4 CVSS score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-33113-memory-corruption-vulnerability-leading-to-system-compromise-or-data-leakage\/\"  data-wpil-monitor-id=\"31541\">System compromise<\/a>, potential data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3723570604\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/div>\n<p>Product | Affected Versions<\/p>\n<p>Rancher | 2.8.0 &#8211; 2.8.13<br \/>\nRancher | 2.9.0 &#8211; 2.9.7<br \/>\nRancher | 2.10.0 &#8211; 2.10.3<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit leverages an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-5376-improper-authentication-vulnerability-in-korenix-jetnet-tftp\/\"  data-wpil-monitor-id=\"31540\">Improper Access Control vulnerability<\/a> in the SUSE Rancher. Specifically, this flaw arises from the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46815-zitadel-identity-infrastructure-software-vulnerability\/\"  data-wpil-monitor-id=\"45119\">software failing to correctly validate user identities<\/a> during the SAML Authentication process. As a result, an attacker with local access to the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-43514-memory-corruption-vulnerability-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"31569\">system can exploit this vulnerability<\/a> to impersonate other users on their first login. This can <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50930-cross-site-request-forgery-csrf-in-savignano-s-notify-leading-to-configuration-tampering-and-potential-data-leakage\/\"  data-wpil-monitor-id=\"32000\">potentially provide unauthorized access to sensitive data<\/a> or even system-level controls.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1955162893\" 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 we cannot provide a real example of the exploit to avoid misuse, we can illustrate a conceptual example of how this exploit might work. The attacker could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50350-broken-cryptographic-algorithm-leads-to-potential-data-leakage-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"33951\">potentially manipulate the SAML response data<\/a> to impersonate another user. The following is a conceptual example:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/saml\/SSO\/alias\/rancher HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/xml\n&lt;samlp:Response xmlns:samlp=&quot;urn:oasis:names:tc:SAML:2.0:protocol&quot;\nID=&quot;identifier_1&quot;\nVersion=&quot;2.0&quot;\nIssueInstant=&quot;2025-01-01T00:00:00Z&quot;\nDestination=&quot;http:\/\/www.example.com\/SSOService.aspx&quot;\nInResponseTo=&quot;identifier_2&quot;&gt;\n&lt;saml:Issuer xmlns:saml=&quot;urn:oasis:names:tc:SAML:2.0:assertion&quot;&gt;\nhttp:\/\/www.example.com\n&lt;\/saml:Issuer&gt;\n&lt;saml:Assertion xmlns:saml=&quot;urn:oasis:names:tc:SAML:2.0:assertion&quot;\nID=&quot;identifier_3&quot;\nIssueInstant=&quot;2025-01-01T00:00:00Z&quot;\nVersion=&quot;2.0&quot;&gt;\n&lt;saml:Subject&gt;\n&lt;saml:NameID&gt;@NotTheRealUser&lt;\/saml:NameID&gt;\n&lt;\/saml:Subject&gt;\n&lt;\/saml:Assertion&gt;\n&lt;\/samlp:Response&gt;<\/code><\/pre>\n<p>In this mock-up, the attacker changes the &#8216;NameID&#8217; field to the victim&#8217;s username, thus pretending to be them during the authentication process.<\/p>\n<p><strong>Recommendations for Mitigation<\/strong><\/p>\n<p>To mitigate this vulnerability, users are advised to apply the vendor patch as soon as possible. For temporary mitigation, users can employ Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDSs) to monitor and control SAML <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31214-a-critical-network-traffic-interception-vulnerability-in-ios-and-ipados\/\"  data-wpil-monitor-id=\"47706\">traffic on their network<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview We are highlighting a significant cybersecurity vulnerability identified as CVE-2025-23389. This vulnerability is an Improper Access Control issue that affects the SUSE Rancher. This software flaw allows a local user to impersonate other identities through the SAML Authentication process upon their first login. The affected users could be anyone using the vulnerable versions of [&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-26955","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\/26955","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=26955"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/26955\/revisions"}],"predecessor-version":[{"id":42516,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/26955\/revisions\/42516"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=26955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=26955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=26955"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=26955"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=26955"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=26955"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=26955"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=26955"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=26955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}