{"id":62415,"date":"2025-08-08T14:27:12","date_gmt":"2025-08-08T14:27:12","guid":{"rendered":""},"modified":"2025-09-10T11:37:49","modified_gmt":"2025-09-10T17:37:49","slug":"cve-2025-54351-buffer-overflow-vulnerability-in-iperf","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54351-buffer-overflow-vulnerability-in-iperf\/","title":{"rendered":"<strong>CVE-2025-54351: Buffer Overflow Vulnerability in iperf<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this blog post, we delve into an intricate vulnerability that has surfaced in iperf, a widely used networking tool for measuring bandwidth performance. This vulnerability, identified as CVE-2025-54351, can lead to potential system compromise or data leakage, highlighting the need for immediate attention and mitigation. Given the pervasiveness of iperf in network performance testing, the implications of this vulnerability are far-reaching, affecting organizations across sectors and scales.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2025-54351<br \/>\nSeverity: High (CVSS: 8.9)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-36600-dell-bios-improper-access-control-vulnerability-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"70247\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1993045485\" 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>iperf | Before 3.19.1<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-13974-high-risk-business-logic-vulnerability-in-up2date-component-of-sophos-firewall\/\"  data-wpil-monitor-id=\"73899\">vulnerability is located in the &#8216;net.c&#8217; component<\/a> of iperf. This stems from improper handling of the &#8211;skip-rx-copy function, particularly for the MSG_TRUNC in the recv function. When this function is used, a buffer overflow is triggered, creating an opening for attackers to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54416-arbitrary-command-execution-vulnerability-in-tj-actions-branch-names-github-action\/\"  data-wpil-monitor-id=\"69821\">execute arbitrary<\/a> code on the system. Attackers can exploit this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-54309-critical-vulnerability-in-crushftp-allowing-remote-admin-access\/\"  data-wpil-monitor-id=\"69819\">vulnerability remotely<\/a> over a network without requiring user interaction or any privileges.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1058799508\" 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>An attacker might exploit the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43209-high-risk-out-of-bounds-access-vulnerability-affecting-multiple-apple-operating-systems\/\"  data-wpil-monitor-id=\"69820\">vulnerability by sending a specially crafted payload to the affected<\/a> iperf version. Conceptually, the malicious shell command might look like this:<\/p>\n<pre><code class=\"\" data-line=\"\">iperf --skip-rx-copy -c target.example.com -p 5201 -F &lt;file_with_malicious_payload&gt;<\/code><\/pre>\n<p>In this example, `target.example.com` is the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-52187-critical-cross-site-scripting-xss-vulnerability-in-getprojectsidea-create-school-management-system-1-0\/\"  data-wpil-monitor-id=\"70246\">vulnerable system<\/a> running iperf, `5201` is the port on which iperf is running, and `file_with_malicious_payload` contains the malicious code that triggers the buffer overflow.<br \/>\nThe above is just a conceptual example and the exact payload would depend on the attacker&#8217;s objective, the specific <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43192-critical-configuration-issue-in-macos-allowing-potential-system-compromise\/\"  data-wpil-monitor-id=\"73900\">system configuration<\/a>, and other factors.<\/p>\n<p><strong>Mitigation and Recommendations<\/strong><\/p>\n<p>To mitigate this vulnerability, users of the affected iperf versions are strongly advised to apply the vendor-provided patch. In the interim, until the patch is applied, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-20133-remote-access-ssl-vpn-vulnerability-in-cisco-secure-firewall-asa-software-and-secure-ftd-software\/\"  data-wpil-monitor-id=\"76871\">security measures such as Web Application Firewalls<\/a> (WAF) or Intrusion Detection Systems (IDS) can be used for temporary mitigation. It is also recommended to review system logs and network traffic for any suspicious activity that may indicate an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46414-unlimited-pin-attempts-vulnerability-in-api\/\"  data-wpil-monitor-id=\"81231\">attempted or successful exploit of this vulnerability<\/a>.<br \/>\nAs a part of good security hygiene, users should always keep their software up-to-date, apply patches promptly, and monitor systems for unusual behavior.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this blog post, we delve into an intricate vulnerability that has surfaced in iperf, a widely used networking tool for measuring bandwidth performance. This vulnerability, identified as CVE-2025-54351, can lead to potential system compromise or data leakage, highlighting the need for immediate attention and mitigation. Given the pervasiveness of iperf in network performance [&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-62415","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\/62415","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=62415"}],"version-history":[{"count":5,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/62415\/revisions"}],"predecessor-version":[{"id":73682,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/62415\/revisions\/73682"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=62415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=62415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=62415"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=62415"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=62415"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=62415"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=62415"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=62415"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=62415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}