{"id":37226,"date":"2025-05-11T21:15:08","date_gmt":"2025-05-11T21:15:08","guid":{"rendered":""},"modified":"2025-09-07T12:33:30","modified_gmt":"2025-09-07T18:33:30","slug":"cve-2023-39443-arbitrary-code-execution-vulnerability-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-39443-arbitrary-code-execution-vulnerability-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-39443: Arbitrary Code Execution Vulnerability in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is constantly evolving, and the latest vulnerability to emerge is CVE-2023-39443. This is a critical flaw that affects the LXT2 parsing functionality of GTKWave 3.3.115. It&#8217;s a <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-6573-critical-kernel-software-vulnerability-leading-to-potential-data-leakage\/\"  data-wpil-monitor-id=\"80170\">software that is widely used for viewing waveform data<\/a>, notably in the electronics industry. Hence, this vulnerability could have far-reaching implications for firms that rely on this software. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45017-severe-sql-injection-vulnerability-in-phpgurukul-park-ticketing-management-system\/\"  data-wpil-monitor-id=\"41997\">vulnerability is rated as high severity<\/a> with a CVSS score of 7.8, indicating a significant risk that warrants immediate attention.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-39443<br \/>\nSeverity: High (7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35996-arbitrary-code-execution-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42037\">Arbitrary code execution<\/a>, potential system compromise, and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2451584914\" 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 <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=\"41914\">vulnerability resides in the way GTKWave&#8217;s<\/a> LXT2 parser handles certain input. Specifically, it contains multiple out-of-bounds write <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35989-integer-overflow-vulnerability-in-gtkwave-s-lxt2-zlib-block-allocation\/\"  data-wpil-monitor-id=\"41948\">vulnerabilities that can be exploited by a specially-crafted .lxt2<\/a> file. When this file is opened, the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35995-gtkwave-array-index-validation-vulnerability-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42001\">vulnerabilities can lead to arbitrary code<\/a> execution. This means that an attacker could run any command of their choosing on the victim&#8217;s system, potentially <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=\"42167\">leading to system<\/a> compromise or data leakage. The out-of-bounds write is performed by the prefix copy loop, introducing the potential for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35970-heap-based-buffer-overflow-vulnerability-in-gtkwave\/\"  data-wpil-monitor-id=\"41921\">buffer overflow<\/a> and memory corruption.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1260158967\" 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>To <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75121\">illustrate the vulnerability<\/a>, consider the following conceptual example. An attacker could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24189-memory-corruption-vulnerability-due-to-maliciously-crafted-web-content-in-various-operating-systems\/\"  data-wpil-monitor-id=\"75122\">craft a malicious<\/a> .lxt2 file like so:<\/p>\n<pre><code class=\"\" data-line=\"\"># Malicious .lxt2 file crafted to exploit the vulnerability\n# Buffer overflow data is represented as &#039;...&#039;\nheader[0] = &#039;...&#039;\nheader[1] = &#039;...&#039;\nheader[2] = &#039;...&#039;\nheader[3] = &#039;...&#039;\n# Crafted payload to execute arbitrary code\npayload = &#039;...&#039;<\/code><\/pre>\n<p>The victim then opens this file with GTKWave 3.3.115, triggering the exploit and <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35997-arbitrary-code-execution-vulnerability-in-gtkwave\/\"  data-wpil-monitor-id=\"42201\">executing the arbitrary code<\/a> contained within the payload.<br \/>\nIt&#8217;s important to note that this is a conceptual example and does not contain actual exploit code. The attacker would need to craft a file that exploits the specific <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35994-critical-array-index-validation-vulnerabilities-in-gtkwave\/\"  data-wpil-monitor-id=\"41987\">vulnerabilities in the LXT2 parser and contains a valid<\/a> payload.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is constantly evolving, and the latest vulnerability to emerge is CVE-2023-39443. This is a critical flaw that affects the LXT2 parsing functionality of GTKWave 3.3.115. It&#8217;s a software that is widely used for viewing waveform data, notably in the electronics industry. Hence, this vulnerability could have far-reaching implications for firms that [&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-37226","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\/37226","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=37226"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37226\/revisions"}],"predecessor-version":[{"id":72583,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37226\/revisions\/72583"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=37226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=37226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=37226"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=37226"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=37226"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=37226"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=37226"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=37226"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=37226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}