{"id":36858,"date":"2025-05-10T10:02:25","date_gmt":"2025-05-10T10:02:25","guid":{"rendered":""},"modified":"2025-05-13T18:17:59","modified_gmt":"2025-05-13T18:17:59","slug":"cve-2023-37447-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-37447-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-37447: Critical Out-of-Bounds Read Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity landscape is constantly evolving, with new vulnerabilities emerging that pose significant risks to systems and data. One such vulnerability, identified as CVE-2023-37447, affects GTKWave 3.3.115, a popular open-source waveform viewer. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3803-critical-vulnerability-in-tenda-w12-and-i24-3-0-0-4-3-0-0-5-resulting-in-stack-based-buffer-overflow\/\"  data-wpil-monitor-id=\"41557\">vulnerability is critical<\/a>, with a CVSS severity score of 7.8, and could potentially lead to system compromise and data leakage.<br \/>\nThe <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35959-command-injection-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41587\">vulnerability is an out-of-bounds read vulnerability in the VCD var definition section of GTKWave<\/a>. It can be triggered by a specially crafted .vcd file, leading to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32444-remote-code-execution-vulnerability-in-vllm-integration-with-mooncake\/\"  data-wpil-monitor-id=\"41882\">code execution<\/a>. This poses a significant threat to any individual or organization using GTKWave, as the successful exploitation of this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1290-high-severity-race-condition-use-after-free-vulnerability-in-kernel-5-4-on-chromeos\/\"  data-wpil-monitor-id=\"41766\">vulnerability could lead to severe<\/a> consequences.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-37447<br \/>\nSeverity: Critical (CVSS Score: 7.8)<br \/>\nAttack Vector: File-based (specially crafted .vcd file)<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required (the victim needs to open the malicious file)<br \/>\nImpact: <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=\"42249\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1029869294\" 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 the out-of-bounds read vulnerabilities that exist in the VCD var definition section functionality of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35703-stack-based-buffer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41716\">GTKWave<\/a>. An attacker can create a specially crafted .vcd file that, when opened, triggers these vulnerabilities, leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-36861-out-of-bounds-write-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42453\">out-of-bounds write<\/a>. This, in turn, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23180-a-critical-vulnerability-allowing-execution-with-unnecessary-privileges\/\"  data-wpil-monitor-id=\"41561\">allows for arbitrary code execution<\/a>, effectively compromising the system and potentially leading to data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-3716569714\" 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>Below is a conceptual example of how the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-47154-exploitation-of-use-after-free-vulnerability-in-libjs-in-ladybird\/\"  data-wpil-monitor-id=\"42370\">vulnerability might be exploited<\/a>. This pseudocode represents the structure of a malicious .vcd file:<\/p>\n<pre><code class=\"\" data-line=\"\">$timescale 1ns $end\n$scope module top $end\n$var wire 1 ! clk $end\n$var wire 64 # data $end\n$var wire 1 $ enable $end\n$upscope $end\n$enddefinitions $end\n#0\n0!\n1#\nx$\n$malicious_code_here<\/code><\/pre>\n<p>In the example above, `$malicious_code_here` represents the place where an attacker would insert malicious <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35995-gtkwave-array-index-validation-vulnerability-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42022\">code to exploit the vulnerability<\/a>. It&#8217;s important to note that this is a conceptual example and should not be used for malicious purposes.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate this vulnerability, users are advised to apply the vendor patch as soon as it is available. In the meantime, the use of a web application firewall (WAF) or intrusion detection system (IDS) can serve as a temporary mitigation, providing some layer of protection against potential exploits.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity landscape is constantly evolving, with new vulnerabilities emerging that pose significant risks to systems and data. One such vulnerability, identified as CVE-2023-37447, affects GTKWave 3.3.115, a popular open-source waveform viewer. This vulnerability is critical, with a CVSS severity score of 7.8, and could potentially lead to system compromise and data leakage. The [&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-36858","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\/36858","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=36858"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36858\/revisions"}],"predecessor-version":[{"id":37787,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36858\/revisions\/37787"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=36858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=36858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=36858"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=36858"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=36858"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=36858"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=36858"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=36858"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=36858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}