{"id":35356,"date":"2025-05-06T06:20:26","date_gmt":"2025-05-06T06:20:26","guid":{"rendered":""},"modified":"2025-06-17T05:21:57","modified_gmt":"2025-06-17T11:21:57","slug":"cve-2023-35963-os-command-injection-vulnerabilities-in-gtkwave","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-35963-os-command-injection-vulnerabilities-in-gtkwave\/","title":{"rendered":"<strong>CVE-2023-35963: OS Command Injection Vulnerabilities in GTKWave<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>This blog post will delve into the details of the recently identified vulnerability, CVE-2023-35963, that affects the decompression functionality of GTKWave 3.3.115. GTKWave is a fully featured GTK+ based wave viewer that is used for viewing VCD waveform files. This vulnerability is particularly serious because its successful exploitation could lead to arbitrary <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-45428-remote-arbitrary-code-execution-vulnerability-in-tenda-ac9-v1-0-firmware\/\"  data-wpil-monitor-id=\"40047\">command<\/a> execution, and subsequently, a complete system compromise or data leakage. Cybersecurity professionals and organizations that use GTKWave should be aware and take appropriate measures 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=\"51840\">risk associated with this vulnerability<\/a>.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-35963<br \/>\nSeverity: High (7.8 CVSS Score)<br \/>\nAttack Vector: Local<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: Required<br \/>\nImpact: <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=\"40173\">Potential system<\/a> compromise or data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-252518374\" 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 <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=\"41047\">vulnerability lies in the decompression functionality of GTKWave<\/a>, specifically in the `vcd2lxt2` utility. Multiple OS command <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-32866-critical-sql-injection-vulnerability-in-telecontrol-server-basic\/\"  data-wpil-monitor-id=\"40087\">injection vulnerabilities<\/a> exist, which, when exploited, can lead to the execution of arbitrary commands. An attacker would need to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-24189-memory-corruption-vulnerability-due-to-maliciously-crafted-web-content-in-various-operating-systems\/\"  data-wpil-monitor-id=\"51841\">craft a malicious<\/a> wave file and then trick the user into opening this file. Once the file is opened, the embedded <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-28035-pre-auth-remote-command-execution-vulnerability-in-totolink-a830r\/\"  data-wpil-monitor-id=\"40098\">commands in the wave file are executed<\/a>, leading to the exploitation of the system.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-1801311613\" 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>Here 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=\"51842\">vulnerability might be exploited<\/a>:<\/p>\n<pre><code class=\"\" data-line=\"\"># Create a malicious wave file\necho &#039;CMD_TO_EXECUTE&#039; &gt; malicious_wave.vcd\n# Get victim to open the file in GTKWave\nGTKWave malicious_wave.vcd<\/code><\/pre>\n<p>In this example, &#8220;CMD_TO_EXECUTE&#8221; is a placeholder for any <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-1950-local-user-command-execution-vulnerability-in-ibm-hardware-management-console\/\"  data-wpil-monitor-id=\"40527\">command that an attacker wishes to execute<\/a> on the victim&#8217;s system.<\/p>\n<p><strong>Steps to Mitigate<\/strong><\/p>\n<p>The best <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43971-critical-vulnerability-in-gobgp-paving-the-way-for-system-compromise\/\"  data-wpil-monitor-id=\"40117\">way to mitigate this vulnerability<\/a> is to apply the vendor patch as soon as it becomes available. However, until then, users can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These tools can help detect and prevent the <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-43858-command-injection-vulnerability-in-youtubedlsharp-library\/\"  data-wpil-monitor-id=\"40391\">injection of malicious commands<\/a>. Additionally, <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=\"59250\">users should also practice caution when opening wave files<\/a> from untrusted or unknown sources.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview This blog post will delve into the details of the recently identified vulnerability, CVE-2023-35963, that affects the decompression functionality of GTKWave 3.3.115. GTKWave is a fully featured GTK+ based wave viewer that is used for viewing VCD waveform files. This vulnerability is particularly serious because its successful exploitation could lead to arbitrary command execution, [&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":[78,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-35356","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-injection","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/35356","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=35356"}],"version-history":[{"count":10,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/35356\/revisions"}],"predecessor-version":[{"id":52945,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/35356\/revisions\/52945"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=35356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=35356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=35356"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=35356"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=35356"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=35356"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=35356"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=35356"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=35356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}