{"id":63971,"date":"2025-08-11T05:46:04","date_gmt":"2025-08-11T05:46:04","guid":{"rendered":""},"modified":"2025-09-26T20:58:41","modified_gmt":"2025-09-27T02:58:41","slug":"cve-2025-44952-buffer-overflow-vulnerability-in-pfcp-library-of-open5gs-due-to-missing-length-check","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-44952-buffer-overflow-vulnerability-in-pfcp-library-of-open5gs-due-to-missing-length-check\/","title":{"rendered":"<strong>CVE-2025-44952: Buffer Overflow Vulnerability in PFCP Library of Open5GS due to Missing Length Check<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The open5GS network software, specifically version 2.7.2 and earlier, exhibits a critical vulnerability, identified as CVE-2025-44952, that could potentially allow a local attacker to compromise the system or lead to data leakage. Open5GS is an open-source project used to implement 5G systems, and its compromise could negatively impact telecommunications providers and their clients, making this a significant cybersecurity concern. The vulnerability resides in the PFCP (Packet Forwarding Control Protocol) library, a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44955-critical-vulnerability-in-ruckus-network-director-allows-jail-users-to-gain-root-access\/\"  data-wpil-monitor-id=\"76065\">critical component of the network<\/a> software.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-44952<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49691-heap-based-buffer-overflow-in-windows-media-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"72094\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-967595351\" 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>Open5GS | 2.7.2 and earlier<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52813-uncovering-the-missing-authorization-vulnerability-in-mobiloud\/\"  data-wpil-monitor-id=\"72233\">vulnerability arises from a missing<\/a> length check in the `ogs_pfcp_subnet_add` function, which is used by both the Session Management Function (smf) and the User Plane Function (upf) in Open5GS. By manipulating the `session.dnn` field with a value exceeding 101 characters in length, an attacker can cause a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-8184-critical-stack-based-buffer-overflow-vulnerability-in-d-link-dir-513\/\"  data-wpil-monitor-id=\"71787\">buffer overflow<\/a>. This overflow can create a critical error state, potentially <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47168-use-after-free-vulnerability-in-microsoft-office-word-allowing-unauthorized-code-execution\/\"  data-wpil-monitor-id=\"73168\">allowing an attacker to execute arbitrary code<\/a> or cause a system crash.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-539849827\" 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>In a conceptual context, the vulnerability might be exploited as follows:<\/p>\n<pre><code class=\"\" data-line=\"\"># Exploit for CVE-2025-44952\n# This is a simplified representation and may not work as it is\n#!\/bin\/bash\n# Generate a string of characters longer than 101\npayload=$(printf &#039;A%.0s&#039; {1..102})\n# Use the payload to exploit the vulnerability\necho &quot;$payload&quot; &gt; \/proc\/[pid]\/session.dnn<\/code><\/pre>\n<p>In this conceptual example, the payload is a string of 102 &#8216;A&#8217; characters. When written to the `session.dnn` field, it triggers a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-7463-critical-buffer-overflow-vulnerability-in-tenda-fh1201-1-2-0-14\/\"  data-wpil-monitor-id=\"71840\">buffer overflow<\/a> due to the missing length check in the `ogs_pfcp_subnet_add` function.<\/p>\n<p><strong>Recommendations<\/strong><\/p>\n<p>The best mitigation against this vulnerability is to apply the vendor\u2019s patch. In cases where immediate patching is not feasible, <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=\"84719\">deploying a Web<\/a> Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary protection. However, these measures are not foolproof and can only serve as a stop-gap while the patch is being applied. It is strongly recommended to update the Open5GS software to the latest <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43588-out-of-bounds-write-vulnerability-in-substance3d-sampler-versions-5-0-and-earlier\/\"  data-wpil-monitor-id=\"73506\">version where this vulnerability<\/a> has been addressed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The open5GS network software, specifically version 2.7.2 and earlier, exhibits a critical vulnerability, identified as CVE-2025-44952, that could potentially allow a local attacker to compromise the system or lead to data leakage. Open5GS is an open-source project used to implement 5G systems, and its compromise could negatively impact telecommunications providers and their clients, making [&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":[86],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-63971","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/63971","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=63971"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/63971\/revisions"}],"predecessor-version":[{"id":77504,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/63971\/revisions\/77504"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=63971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=63971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=63971"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=63971"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=63971"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=63971"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=63971"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=63971"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=63971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}