{"id":37227,"date":"2025-05-11T22:15:24","date_gmt":"2025-05-11T22:15:24","guid":{"rendered":""},"modified":"2025-05-20T05:05:06","modified_gmt":"2025-05-20T05:05:06","slug":"cve-2023-39444-critical-out-of-bounds-write-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-39444-critical-out-of-bounds-write-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-39444: Critical Out-of-Bounds Write Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is continuously evolving, with new vulnerabilities being discovered regularly. One such vulnerability, identified as CVE-2023-39444, poses a critical risk to systems running on GTKWave 3.3.115. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-36861-out-of-bounds-write-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42449\">vulnerability arises from multiple out-of-bounds write<\/a> issues, existing within the LXT2 parsing functionality of the mentioned software. This vulnerability is of particular concern due to its potential for arbitrary code execution, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24351-remote-logging-vulnerability-in-ctrlx-os-can-lead-to-root-level-system-compromise\/\"  data-wpil-monitor-id=\"42166\">leading to a full system<\/a> compromise if successfully exploited.<br \/>\nAffected parties range from individual users to large enterprises running the at-risk version of GTKWave. The significance of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-36864-integer-overflow-vulnerability-in-gtkwave-3-3-115-with-potential-for-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42482\">vulnerability is underscored by the potential<\/a> for data leakage and system compromise &#8211; two of the most severe cybersecurity threats today.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-39444<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2158-local-file-inclusion-vulnerability-in-wordpress-review-plugin\/\"  data-wpil-monitor-id=\"45561\">Local File<\/a><br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49126-critical-vulnerability-in-solid-edge-se2023-allows-for-potential-system-compromise\/\"  data-wpil-monitor-id=\"43439\">Potential system<\/a> compromise, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1288407188\" 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>GTKWave | 3.3.115<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The exploitation of this vulnerability stems from the manipulation of the LXT2 parsing functionality in <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35969-critical-heap-based-buffer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41907\">GTKWave<\/a>. An attacker crafts a malicious .lxt2 file, which, when opened by the GTKWave software, triggers the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-37282-critical-out-of-bounds-write-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42578\">out-of-bounds write vulnerabilities<\/a>. The string copy loop performs an out-of-bounds write, which then allows <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35995-gtkwave-array-index-validation-vulnerability-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42014\">arbitrary code<\/a> execution. In essence, the victim&#8217;s system is compromised simply by opening a manipulated file, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32974-critical-vulnerability-in-xwiki-s-rights-analysis-leading-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"42235\">leading potentially to data leakage or total system<\/a> control by the attacker.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1707279767\" 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>The following pseudocode illustrates a conceptual example of how the malicious .lxt2 file might be crafted.<\/p>\n<pre><code class=\"\" data-line=\"\"># This is a conceptual example and not a real exploit code\ndef craft_malicious_lxt2():\nmalicious_payload = &quot;arbitrary code&quot;\nlxt2_file = LXT2File(&quot;vulnerable.lxt2&quot;)\nlxt2_file.write_out_of_bounds(malicious_payload)\nlxt2_file.save()\ncraft_malicious_lxt2()<\/code><\/pre>\n<p>Note: This is a highly simplified example and does not represent a genuine exploit. It is provided for illustrative purposes only to demonstrate the general concept behind the exploit.<br \/>\nThe best course of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46342-kyverno-policy-engine-vulnerability-enables-unauthorized-actions-in-kubernetes\/\"  data-wpil-monitor-id=\"42700\">action to counter this vulnerability<\/a> is to apply the vendor patch. However, if this is not immediately possible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is continuously evolving, with new vulnerabilities being discovered regularly. One such vulnerability, identified as CVE-2023-39444, poses a critical risk to systems running on GTKWave 3.3.115. The vulnerability arises from multiple out-of-bounds write issues, existing within the LXT2 parsing functionality of the mentioned software. This vulnerability is of particular concern due to [&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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-37227","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37227","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=37227"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37227\/revisions"}],"predecessor-version":[{"id":40754,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37227\/revisions\/40754"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=37227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=37227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=37227"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=37227"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=37227"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=37227"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=37227"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=37227"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=37227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}