{"id":59873,"date":"2025-08-04T13:51:16","date_gmt":"2025-08-04T13:51:16","guid":{"rendered":""},"modified":"2025-09-12T00:48:13","modified_gmt":"2025-09-12T06:48:13","slug":"cve-2025-6504-unauthorized-access-via-ip-spoofing-in-hdp-server","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-6504-unauthorized-access-via-ip-spoofing-in-hdp-server\/","title":{"rendered":"<strong>CVE-2025-6504: Unauthorized Access via IP Spoofing in HDP Server<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The CVE-2025-6504 vulnerability is a critical security flaw that affects versions of HDP Server below 4.6.2.2978 on Linux. This vulnerability, involving unauthorized access through IP spoofing, poses a serious threat for system administrators and users alike. The exploit leverages the X-Forwarded-For (XFF) header, a client-controlled element, to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43273-sandbox-restriction-bypass-vulnerability-in-macos-sequoia\/\"  data-wpil-monitor-id=\"72955\">bypass IP restrictions<\/a>. While a successful attack would still require valid user credentials, it significantly lowers the barriers to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54378-unauthorized-access-vulnerability-in-hax-cms\/\"  data-wpil-monitor-id=\"68848\">unauthorized access<\/a>, potentially leading to system compromise or data leakage.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-6504<br \/>\nSeverity: High (CVSS: 8.4)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43933-high-risk-vulnerability-leading-to-potential-system-compromise-via-password-reset-feature\/\"  data-wpil-monitor-id=\"70939\">Potential system compromise<\/a> or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3328280206\" 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>HDP Server | Versions below 4.6.2.2978<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploit hinges on the X-Forwarded-For (XFF) header, a de facto standard for identifying the originating IP address of a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7390-malicious-client-bypass-of-opc-https-server-certificate-trust-check\/\"  data-wpil-monitor-id=\"81875\">client connecting to a web server<\/a> through an HTTP proxy. This header is client-controlled, meaning that an attacker could spoof it, and if the spoofed IP matches a whitelisted range, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-5835-droip-plugin-for-wordpress-unauthorized-access-and-modification-vulnerability\/\"  data-wpil-monitor-id=\"68938\">unauthorized access<\/a> could be granted. Therefore, despite IP restrictions, the system becomes <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49672-buffer-overflow-vulnerability-in-windows-routing-and-remote-access-service\/\"  data-wpil-monitor-id=\"67809\">vulnerable to potential unauthorized access<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3246258155\" 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&#8217;s a conceptual example of how the vulnerability might be exploited:<\/p>\n<pre><code class=\"\" data-line=\"\">GET \/restricted\/resource HTTP\/1.1\nHost: vulnerable-server.com\nX-Forwarded-For: &lt;spoofed IP&gt;\nUser-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64)\nAuthorization: Bearer &lt;valid user token&gt;<\/code><\/pre>\n<p>In this example, the attacker is using a spoofed <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44963-ruckus-network-director-rnd-spoofing-vulnerability\/\"  data-wpil-monitor-id=\"73879\">IP<\/a> address in the X-Forwarded-For header to trick the server into thinking the request is coming from a trusted network. The presence of a valid user token (which could have been obtained through other means) makes this attack more likely to succeed.<\/p>\n<p><strong>Recommended Mitigation<\/strong><\/p>\n<p>As a solution, users of HDP Server versions below 4.6.2.2978 should apply the vendor patch immediately. If immediate patching is not feasible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. These tools can help detect and prevent <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4855-unauthorized-access-vulnerability-in-support-board-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"70938\">unauthorized access<\/a> attempts. Long term, however, patching the system should be considered the definitive solution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The CVE-2025-6504 vulnerability is a critical security flaw that affects versions of HDP Server below 4.6.2.2978 on Linux. This vulnerability, involving unauthorized access through IP spoofing, poses a serious threat for system administrators and users alike. The exploit leverages the X-Forwarded-For (XFF) header, a client-controlled element, to bypass IP restrictions. While a successful attack [&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":[88,82],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59873","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-linux","vendor-microsoft"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59873","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=59873"}],"version-history":[{"count":7,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59873\/revisions"}],"predecessor-version":[{"id":74335,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/59873\/revisions\/74335"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=59873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=59873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=59873"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=59873"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=59873"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=59873"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=59873"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=59873"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=59873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}