{"id":36338,"date":"2025-05-08T15:45:30","date_gmt":"2025-05-08T15:45:30","guid":{"rendered":""},"modified":"2025-06-17T05:19:19","modified_gmt":"2025-06-17T11:19:19","slug":"cve-2023-37443-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-37443-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-37443: Critical Out-of-Bounds Read Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>Cybersecurity professionals should be aware of a recently disclosed vulnerability identified as CVE-2023-37443, which affects GTKWave version 3.3.115. This vulnerability has been classified as critical due to its potential to enable arbitrary code execution, leading to system compromise or data leakage. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-37418-critical-vulnerability-in-gtkwave-s-vcd-parse-valuechange-portdump-functionality\/\"  data-wpil-monitor-id=\"42582\">vulnerability lies in the software&#8217;s VCD<\/a> var definition section, and exploitation requires user interaction, specifically opening a malicious .vcd file. Therefore, the risk is substantial for <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3055-critical-arbitrary-file-deletion-vulnerability-in-wp-user-frontend-pro-plugin\/\"  data-wpil-monitor-id=\"59171\">users who frequently interact with .vcd files<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-37443<br \/>\nSeverity: High (7.8 CVSS)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: User<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-21821-arbitrary-os-command-execution-vulnerability-in-multiple-tp-link-products\/\"  data-wpil-monitor-id=\"41105\">Arbitrary code execution<\/a>, potential system compromise, and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1960852399\" 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 exploit takes advantage of multiple out-of-bounds <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-34436-critical-out-of-bounds-write-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41028\">read vulnerabilities within the VCD var definition section of GTKWave<\/a>. An attacker can design a specially crafted .vcd file to trigger these vulnerabilities, resulting in arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-20654-microsoft-odbc-driver-remote-code-execution-vulnerability-a-high-level-threat\/\"  data-wpil-monitor-id=\"41331\">code execution<\/a>. The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-45465-critical-bmp-parsing-vulnerability-in-syngo-fastview\/\"  data-wpil-monitor-id=\"41244\">vulnerability is specifically located in the GUI&#8217;s legacy VCD parsing<\/a> code. Once the malicious .vcd file is opened by a user, the crafted code is executed, potentially leading to a full system compromise or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50612-escalation-of-privileges-and-data-leakage-in-fit2cloud-cloud-explorer-lite\/\"  data-wpil-monitor-id=\"41262\">data leakage<\/a>.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-4258593640\" 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 the given context, a conceptual example of exploiting this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43951-local-file-inclusion-vulnerability-in-labvantage-prior-to-lv-8-8-0-13-hf6\/\"  data-wpil-monitor-id=\"41746\">vulnerability might involve creating a malicious .vcd file<\/a> which contains specially crafted data designed to trigger an out-of-bounds read. This could be represented in pseudocode as such:<\/p>\n<pre><code class=\"\" data-line=\"\"># Pseudocode representation of malicious .vcd file\nclass MaliciousVCD:\ndef __init__(self):\nself.data = self.create_malicious_data()\ndef create_malicious_data(self):\n# Craft data that triggers out-of-bounds read in GTKWave&#039;s VCD parsing\ndata = &quot;...&quot;\nreturn data\n# Create and save malicious .vcd file\nmalicious_vcd = MaliciousVCD()\nsave_file(malicious_vcd, &quot;malicious.vcd&quot;)<\/code><\/pre>\n<p>Please note that this is a simplified representation. The actual creation of malicious data would require detailed knowledge of the specific <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35004-critical-integer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41052\">vulnerabilities in the VCD parsing code of GTKWave<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview Cybersecurity professionals should be aware of a recently disclosed vulnerability identified as CVE-2023-37443, which affects GTKWave version 3.3.115. This vulnerability has been classified as critical due to its potential to enable arbitrary code execution, leading to system compromise or data leakage. The vulnerability lies in the software&#8217;s VCD var definition section, and exploitation requires [&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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-36338","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36338","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=36338"}],"version-history":[{"count":9,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36338\/revisions"}],"predecessor-version":[{"id":52880,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36338\/revisions\/52880"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=36338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=36338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=36338"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=36338"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=36338"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=36338"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=36338"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=36338"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=36338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}