{"id":34574,"date":"2025-05-05T09:09:30","date_gmt":"2025-05-05T09:09:30","guid":{"rendered":""},"modified":"2025-08-30T04:38:57","modified_gmt":"2025-08-30T10:38:57","slug":"cve-2023-35004-critical-integer-overflow-vulnerability-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-35004-critical-integer-overflow-vulnerability-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-35004: Critical Integer Overflow Vulnerability in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The world of cybersecurity has once again been put on alert due to the discovery of a critical vulnerability in the VZT longest_len value allocation functionality of GTKWave version 3.3.115. This vulnerability, designated as CVE-2023-35004, poses a significant threat to any system running this specific version of GTKWave. The primary concern arises from the fact that this vulnerability, if successfully exploited, can lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-43958-arbitrary-file-upload-vulnerability-in-hospital-management-system-v4-0\/\"  data-wpil-monitor-id=\"39699\">arbitrary code execution which can potentially compromise the entire system<\/a> or result in data leakage.<br \/>\nAs a cybersecurity expert, it&#8217;s essential to grasp the <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=\"41776\">severity of this vulnerability<\/a>, its potential impact, and the mitigation steps necessary to prevent exploitation. It&#8217;s worth noting that this <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3616-arbitrary-file-upload-vulnerability-in-greenshift-wordpress-plugin\/\"  data-wpil-monitor-id=\"39919\">vulnerability requires the victim to open a malicious .vzt file<\/a> to be triggered, which underscores the ever-present need for vigilance and caution when dealing with unfamiliar files.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-35004<br \/>\nSeverity: High (7.8 CVSS score)<br \/>\nAttack Vector: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2101-local-file-inclusion-vulnerability-in-edumall-wordpress-theme\/\"  data-wpil-monitor-id=\"40706\">Local file<\/a><br \/>\nPrivileges Required: User level<br \/>\nUser Interaction: Required<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=\"39772\">System compromise and potential<\/a> data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-4278910828\" 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: 720px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 22px; font-weight: 600; display: flex; align-items: center; letter-spacing: -0.02em;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 10px;\">\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: 42px; height: 42px;\" \/>\r\n    <\/a>\r\n    Share secrets securely\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 14px; color: #d1d5db;\">\r\n    Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 18px; color: #a1a1aa;\">\r\n    Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 24px; color: #e4e4e7;\">\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Encrypted identity<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Private Spaces for organizations and teams<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 End-to-end encrypted chat, calls, files, and notes<\/li>\r\n    <li style=\"margin-bottom: 8px;\">\u2022 Sensitive AI work and protected collaboration<\/li>\r\n    <li>\u2022 Built for information that cannot leak<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px; color: #ffffff;\">\r\n    Our mission is to secure human work alongside AI.\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: 8px; font-weight: 500;\">\r\n      Download Ameeba\r\n    <\/a>\r\n\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 8px; font-weight: 500;\">\r\n      Learn More\r\n    <\/a>\r\n  <\/div>\r\n<\/div><\/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 vulnerability lies in the VZT longest_len value allocation functionality of <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=\"41034\">GTKWave<\/a>. An integer <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=\"39580\">overflow vulnerability<\/a> exists, which can be exploited by a specially crafted .vzt file. When a user opens this malicious file, the integer overflow <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28034-remote-command-execution-vulnerability-in-totolink-wireless-routers\/\"  data-wpil-monitor-id=\"39483\">vulnerability can lead to arbitrary code execution<\/a>. This means the attacker can run any code they desire on the victim&#8217;s system, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32849-vulnerability-in-telecontrol-server-basic-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"39129\">potentially leading to system<\/a> compromise or data leakage.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-752391162\" 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 below pseudocode <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=\"75217\">illustrates a hypothetical scenario where the vulnerability<\/a> is being exploited.<\/p>\n<pre><code class=\"\" data-line=\"\"># This is a conceptual example and not actual exploit code\nclass MaliciousVZT:\ndef __init__(self):\nself.longest_len = 2**32    # trigger integer overflow\ndef execute(self):\nopen_vzt_file(self.longest_len)\nmalicious_vzt = MaliciousVZT()\nmalicious_vzt.execute()<\/code><\/pre>\n<p>In this hypothetical example, a malicious .vzt file is created with a longest_len value that triggers an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35057-critical-integer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41065\">integer overflow<\/a>. When the user opens this file using the `open_vzt_file` function, the overflow occurs, potentially leading to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-40446-arbitrary-code-execution-vulnerability-in-forkosh-mime-tex\/\"  data-wpil-monitor-id=\"39857\">arbitrary code execution<\/a>.<br \/>\nIt&#8217;s important to note that this is only a conceptual example. Actual exploitation would depend on various factors such as the specifics of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46661-unauthenticated-remote-code-execution-vulnerability-in-ipw-systems-metazo\/\"  data-wpil-monitor-id=\"40728\">system and the code<\/a> running on it.<\/p>\n<p><strong>How to Mitigate this Vulnerability<\/strong><\/p>\n<p>The most effective <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43971-critical-vulnerability-in-gobgp-paving-the-way-for-system-compromise\/\"  data-wpil-monitor-id=\"40108\">way to mitigate this vulnerability<\/a> is by applying the vendor-supplied patch. If a patch is not immediately available, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method. These tools can 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=\"41934\">block attempts to exploit this vulnerability<\/a>, thereby protecting the system until a permanent fix is applied. As always, it&#8217;s also crucial to avoid opening files from unknown or untrusted sources, especially those with a .vzt extension, as they could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-22636-cross-site-scripting-vulnerability-in-vr-frases-leads-to-potential-system-compromise\/\"  data-wpil-monitor-id=\"40181\">potentially be crafted to exploit this vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The world of cybersecurity has once again been put on alert due to the discovery of a critical vulnerability in the VZT longest_len value allocation functionality of GTKWave version 3.3.115. This vulnerability, designated as CVE-2023-35004, poses a significant threat to any system running this specific version of GTKWave. The primary concern arises from 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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-34574","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\/34574","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=34574"}],"version-history":[{"count":16,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34574\/revisions"}],"predecessor-version":[{"id":67810,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/34574\/revisions\/67810"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=34574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=34574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=34574"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=34574"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=34574"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=34574"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=34574"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=34574"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=34574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}