{"id":36909,"date":"2025-05-10T15:04:18","date_gmt":"2025-05-10T15:04:18","guid":{"rendered":""},"modified":"2025-09-10T18:12:44","modified_gmt":"2025-09-11T00:12:44","slug":"cve-2023-37575-use-after-free-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-37575-use-after-free-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"<strong>CVE-2023-37575: Use-After-Free Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>In this post, we will be examining the CVE-2023-37575 vulnerability-a series of use-after-free vulnerabilities found in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. This vulnerability is notable due to its ability to allow an attacker to execute arbitrary code on a system. The exploitation of this vulnerability requires a victim to open a maliciously crafted .vcd file, making it a <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=\"42285\">potential threat to users and systems<\/a> that handle .vcd files.<br \/>\nThis <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=\"42484\">vulnerability is significant not only because of the potential<\/a> damage it can cause, but also because of its relative simplicity; it requires only user interaction for successful execution, making it a dangerous vector for attacks aiming to compromise systems or leak sensitive data.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-37575<br \/>\nSeverity: High (CVSS: 7.8)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: None<br \/>\nUser Interaction: Required<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-49129-stack-overflow-vulnerability-in-solid-edge-se2023-allows-potential-system-compromise\/\"  data-wpil-monitor-id=\"43543\">Potential system<\/a> compromise and data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-598826940\" 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 use-after-free vulnerabilities in the VCD get_vartoken realloc functionality of <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-33117-memory-corruption-vulnerability-in-hlos-adsp-module-loading\/\"  data-wpil-monitor-id=\"41711\">GTKWave<\/a> 3.3.115 occur when the software uses a pointer after the system has freed the memory it points to. When a victim opens a specially crafted .vcd file, an attacker can manipulate the memory allocation to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32444-remote-code-execution-vulnerability-in-vllm-integration-with-mooncake\/\"  data-wpil-monitor-id=\"41879\">execute arbitrary code<\/a>. This <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35995-gtkwave-array-index-validation-vulnerability-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"42020\">code execution can lead<\/a> to a system compromise or potential data leakage, depending on the attacker&#8217;s intent.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2526866922\" 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=\"42323\">vulnerability might be exploited<\/a>. In this case, the attacker creates a malicious .vcd <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=\"41743\">file that triggers the use-after-free vulnerability<\/a> when opened.<\/p>\n<pre><code class=\"\" data-line=\"\"># Pseudocode\nCreate malicious_vcd_file.vcd\n{\nManipulate memory allocation via get_vartoken realloc function\nInject arbitrary malicious code\n}\nSend malicious_vcd_file.vcd to victim\n{\nVictim opens malicious_vcd_file.vcd\nArbitrary malicious code executes leading to potential system compromise or data leakage\n}<\/code><\/pre>\n<p>Please note that this is a conceptual example and may not reflect the exact <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-21120-trusting-http-permission-methods-on-the-server-side-vulnerability-in-dell-avamar\/\"  data-wpil-monitor-id=\"81509\">method an attacker might use to exploit this vulnerability<\/a>. It is intended to illustrate the basic principle of the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24274-input-validation-issue-exploitable-via-malicious-app-on-macos\/\"  data-wpil-monitor-id=\"81510\">exploit and should not be used for malicious<\/a> purposes.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>To mitigate the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-31637-high-risk-sql-injection-vulnerability-in-lambertgroup-shout\/\"  data-wpil-monitor-id=\"51877\">risks associated with the CVE-2023-37575 vulnerability<\/a>, users and administrators are advised to apply vendor patches as soon as they become available. In the absence of a patch, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These measures can protect against the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35996-arbitrary-code-execution-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"42044\">arbitrary code execution<\/a> that forms the basis of the exploit. However, they should serve only as an interim solution until a more permanent fix can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview In this post, we will be examining the CVE-2023-37575 vulnerability-a series of use-after-free vulnerabilities found in the VCD get_vartoken realloc functionality of GTKWave 3.3.115. This vulnerability is notable due to its ability to allow an attacker to execute arbitrary code on a system. The exploitation of this vulnerability requires a victim to open a [&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-36909","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\/36909","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=36909"}],"version-history":[{"count":11,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36909\/revisions"}],"predecessor-version":[{"id":73960,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/36909\/revisions\/73960"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=36909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=36909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=36909"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=36909"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=36909"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=36909"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=36909"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=36909"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=36909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}