{"id":36338,"date":"2025-05-08T15:45:30","date_gmt":"2025-05-08T15:45:30","guid":{"rendered":""},"modified":"2025-06-17T05:19:19","modified_gmt":"2025-06-17T11:19:19","slug":"cve-2023-37443-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-37443-critical-out-of-bounds-read-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"CVE-2023-37443: Critical Out-of-Bounds Read Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

Cybersecurity professionals should be aware of a recently disclosed vulnerability identified as CVE-2023-37443, which affects GTKWave version 3.3.115. This vulnerability has been classified as critical due to its potential to enable arbitrary code execution, leading to system compromise or data leakage. The vulnerability lies in the software’s VCD<\/a> var definition section, and exploitation requires user interaction, specifically opening a malicious .vcd file. Therefore, the risk is substantial for users who frequently interact with .vcd files<\/a>.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2023-37443
\nSeverity: High (7.8 CVSS)
\nAttack Vector: Local
\nPrivileges Required: User
\nUser Interaction: Required
\nImpact: Arbitrary code execution<\/a>, potential system compromise, and data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

GTKWave | 3.3.115<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit takes advantage of multiple out-of-bounds read vulnerabilities within the VCD var definition section of GTKWave<\/a>. An attacker can design a specially crafted .vcd file to trigger these vulnerabilities, resulting in arbitrary code execution<\/a>. The vulnerability is specifically located in the GUI’s legacy VCD parsing<\/a> code. Once the malicious .vcd file is opened by a user, the crafted code is executed, potentially leading to a full system compromise or data leakage<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

In the given context, a conceptual example of exploiting this vulnerability might involve creating a malicious .vcd file<\/a> which contains specially crafted data designed to trigger an out-of-bounds read. This could be represented in pseudocode as such:<\/p>\n

# Pseudocode representation of malicious .vcd file\nclass MaliciousVCD:\ndef __init__(self):\nself.data = self.create_malicious_data()\ndef create_malicious_data(self):\n# Craft data that triggers out-of-bounds read in GTKWave's VCD parsing\ndata = \"...\"\nreturn data\n# Create and save malicious .vcd file\nmalicious_vcd = MaliciousVCD()\nsave_file(malicious_vcd, \"malicious.vcd\")<\/code><\/pre>\n
Please note that this is a simplified representation. The actual creation of malicious data would require detailed knowledge of the specific vulnerabilities in the VCD parsing code of GTKWave<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview Cybersecurity professionals should be aware of a recently disclosed vulnerability identified as CVE-2023-37443, which affects GTKWave version 3.3.115. This vulnerability has been classified as critical due to its potential to enable arbitrary code execution, leading to system compromise or data leakage. The vulnerability lies in the software’s VCD var definition section, and exploitation requires […]<\/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,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-36338","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t