{"id":34290,"date":"2025-05-03T05:50:34","date_gmt":"2025-05-03T05:50:34","guid":{"rendered":""},"modified":"2025-09-26T20:58:56","modified_gmt":"2025-09-27T02:58:56","slug":"cve-2023-7208-critical-buffer-overflow-vulnerability-in-totolink-x2000r-v2-2-0-0-b20230727-10434","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-7208-critical-buffer-overflow-vulnerability-in-totolink-x2000r-v2-2-0-0-b20230727-10434\/","title":{"rendered":"<strong>CVE-2023-7208: Critical Buffer Overflow Vulnerability in Totolink X2000R_V2 2.0.0-B20230727.10434<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In an ever-evolving digital landscape, cybersecurity threats are a constant concern for businesses and individuals alike. One such threat that has recently surfaced is a critical vulnerability found in Totolink&#8217;s X2000R_V2 2.0.0-B20230727.10434. This security flaw, identified as CVE-2023-7208, affects the function formTmultiAP of the file \/bin\/boa and has the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32849-vulnerability-in-telecontrol-server-basic-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39226\">potential to lead to a system<\/a> compromise or data leakage if exploited. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-4083-process-isolation-vulnerability-in-thunderbird-and-firefox-due-to-improper-handling-of-javascript-uris\/\"  data-wpil-monitor-id=\"41672\">vulnerability is particularly concerning due<\/a> to the lack of response from the vendor, prompting the need for immediate attention and mitigative measures.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-7208<br \/>\nSeverity: Critical, CVSS score of 8.0<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32857-sql-injection-vulnerability-in-telecontrol-server-basic-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39787\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-3206711761\" 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>Totolink X2000R_V2 | 2.0.0-B20230727.10434<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-43958-arbitrary-file-upload-vulnerability-in-hospital-management-system-v4-0\/\"  data-wpil-monitor-id=\"39720\">vulnerability lies in the formTmultiAP function of the \/bin\/boa file<\/a>. A carefully crafted manipulation can lead to a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28024-buffer-overflow-vulnerability-in-totolink-a810r-v4-1-2cu-5182-b20201026\/\"  data-wpil-monitor-id=\"39552\">buffer overflow<\/a>, allowing potential threat actors to execute arbitrary code or cause a denial of service (DoS) condition. With no reported requirement for user interaction or privileges, this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28034-remote-command-execution-vulnerability-in-totolink-wireless-routers\/\"  data-wpil-monitor-id=\"39467\">vulnerability is especially dangerous as it can be exploited remotely<\/a> by unauthenticated attackers.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1769643739\" 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 no specific exploit code has been made public, a theoretical exploit could look similar to this:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/bin\/boa HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/x-www-form-urlencoded\nformTmultiAP={ &quot;malicious_payload&quot;: &quot;A&quot;.repeat(5000) }<\/code><\/pre>\n<p>In this example, the &#8220;A&#8221;.repeat(5000) represents a buffer overflow attack, where the <a href=\"https:\/\/www.ameeba.com\/blog\/ahold-delhaize-cyber-attack-unpacking-the-data-breach-and-its-implications\/\"  data-wpil-monitor-id=\"39225\">attacker sends more data<\/a> than the buffer can handle, causing it to overflow and potentially allowing the attacker to execute arbitrary code.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Due to the lack of response from the vendor, immediate mitigation <a href=\"https:\/\/www.ameeba.com\/blog\/uh-cybersecurity-camps-a-crucial-step-towards-securing-our-digital-future\/\"  data-wpil-monitor-id=\"39468\">steps are crucial<\/a>. Users should consider <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=\"84756\">deploying a Web<\/a> Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help detect and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35989-integer-overflow-vulnerability-in-gtkwave-s-lxt2-zlib-block-allocation\/\"  data-wpil-monitor-id=\"41944\">block attempts to exploit this vulnerability<\/a>. Users are advised to keep a close watch on any updates from the vendor and apply patches as soon as they become available.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In an ever-evolving digital landscape, cybersecurity threats are a constant concern for businesses and individuals alike. One such threat that has recently surfaced is a critical vulnerability found in Totolink&#8217;s X2000R_V2 2.0.0-B20230727.10434. This security flaw, identified as CVE-2023-7208, affects the function formTmultiAP of the file \/bin\/boa and has the potential to lead to a [&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":[86,87],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-34290","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-dos"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34290","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=34290"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34290\/revisions"}],"predecessor-version":[{"id":77540,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34290\/revisions\/77540"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=34290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=34290"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=34290"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=34290"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=34290"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=34290"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=34290"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=34290"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=34290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}