{"id":37038,"date":"2025-05-11T04:09:15","date_gmt":"2025-05-11T04:09:15","guid":{"rendered":""},"modified":"2025-10-29T04:22:09","modified_gmt":"2025-10-29T10:22:09","slug":"cve-2023-38622-integer-overflow-vulnerabilities-in-gtkwave-vzt-facgeometry-parsing-functionality","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-38622-integer-overflow-vulnerabilities-in-gtkwave-vzt-facgeometry-parsing-functionality\/","title":{"rendered":"<strong>CVE-2023-38622: Integer Overflow Vulnerabilities in GTKWave VZT facgeometry Parsing Functionality<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>The cybersecurity community has recently discovered a significant vulnerability within the VZT facgeometry parsing functionality component of GTKWave 3.3.115. This vulnerability presents as multiple integer overflow issues that, if exploited, can lead to arbitrary code execution. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-44192-high-severity-sql-injection-vulnerability-in-simple-barangay-management-system-v1-0\/\"  data-wpil-monitor-id=\"42129\">vulnerability can result in system<\/a> compromise or data leakage. As a result, anyone utilizing GTKWave 3.3.115 is at risk and needs to be aware of these <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-46342-kyverno-policy-engine-vulnerability-enables-unauthorized-actions-in-kubernetes\/\"  data-wpil-monitor-id=\"42701\">vulnerabilities to take appropriate mitigation actions<\/a>. 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=\"41788\">vulnerability is significant due to the potential severity<\/a> of the impact, with a CVSS severity score of 7.8.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-38622<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: File-based (<a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32701-elevation-of-privileges-via-windows-common-log-file-system-driver\/\"  data-wpil-monitor-id=\"91780\">via .vzt file<\/a>)<br \/>\nPrivileges Required: None<br \/>\n<a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3054-arbitrary-file-upload-vulnerability-in-wp-user-frontend-pro-plugin-for-wordpress\/\"  data-wpil-monitor-id=\"59247\">User Interaction: Required (User must open a malicious .vzt file)<\/a><br \/>\nImpact: Arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32444-remote-code-execution-vulnerability-in-vllm-integration-with-mooncake\/\"  data-wpil-monitor-id=\"41873\">code execution<\/a> leading to potential system compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-2558966058\" 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 <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35961-os-command-injection-vulnerabilities-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41842\">vulnerability resides in the VZT facgeometry parsing functionality of GTKWave<\/a>. An attacker crafts a .vzt file designed to trigger multiple <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35989-integer-overflow-vulnerability-in-gtkwave-s-lxt2-zlib-block-allocation\/\"  data-wpil-monitor-id=\"41933\">integer overflows<\/a> when the file is opened by the victim. The <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=\"42464\">integer overflows<\/a> occur when allocating the `len` array. This overflow can lead to memory corruption, providing the attacker with the ability to execute <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35995-gtkwave-array-index-validation-vulnerability-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42019\">arbitrary code<\/a> on the victim&#8217;s system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2415840362\" 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>While a specific code example is not provided, a conceptual representation of the exploit is as follows:<\/p>\n<pre><code class=\"\" data-line=\"\"># Create malicious .vzt file\nmalicious_file = open(&quot;exploit.vzt&quot;, &quot;w&quot;)\n# Write data to trigger integer overflow\nmalicious_file.write(create_overflow_data())\n# Save and close the file\nmalicious_file.close()<\/code><\/pre>\n<p>In this conceptual code, the function `create_overflow_data()` would generate data specifically designed to cause the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-36916-integer-overflow-vulnerabilities-in-gtkwave-s-fst-reader\/\"  data-wpil-monitor-id=\"42576\">integer overflow<\/a> when the `len` array is allocated. The resulting .vzt file, when opened by the victim using GTKWave 3.3.115, would trigger the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-2907-critical-vulnerability-in-order-delivery-date-wordpress-plugin-could-allow-full-site-takeover\/\"  data-wpil-monitor-id=\"41823\">vulnerability and allow<\/a> arbitrary code execution.<\/p>\n<p><strong>Mitigation Actions<\/strong><\/p>\n<p>Users of the affected version of GTKWave are advised to apply the vendor patch as soon as it becomes available. In the interim, it is recommended to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to mitigate the <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=\"42277\">potential impact of this vulnerability<\/a>. Special attention should be given to any .vzt files from unknown or untrusted sources.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview The cybersecurity community has recently discovered a significant vulnerability within the VZT facgeometry parsing functionality component of GTKWave 3.3.115. This vulnerability presents as multiple integer overflow issues that, if exploited, can lead to arbitrary code execution. This vulnerability can result in system compromise or data leakage. As a result, anyone utilizing GTKWave 3.3.115 is [&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-37038","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\/37038","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=37038"}],"version-history":[{"count":13,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37038\/revisions"}],"predecessor-version":[{"id":84953,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/37038\/revisions\/84953"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=37038"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=37038"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=37038"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=37038"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=37038"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=37038"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=37038"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=37038"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=37038"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}