{"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":"CVE-2023-37575: Use-After-Free Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"

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

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 potential threat to users and systems<\/a> that handle .vcd files.
\nThis 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

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

CVE ID: CVE-2023-37575
\nSeverity: High (CVSS: 7.8)
\nAttack Vector: Local
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Potential system<\/a> 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 use-after-free vulnerabilities in the VCD get_vartoken realloc functionality of 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 execute arbitrary code<\/a>. This code execution can lead<\/a> to a system compromise or potential data leakage, depending on the attacker’s intent.<\/p>\n

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

Below is a conceptual example of how the vulnerability might be exploited<\/a>. In this case, the attacker creates a malicious .vcd file that triggers the use-after-free vulnerability<\/a> when opened.<\/p>\n

# 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
Please note that this is a conceptual example and may not reflect the exact method an attacker might use to exploit this vulnerability<\/a>. It is intended to illustrate the basic principle of the exploit and should not be used for malicious<\/a> purposes.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
To mitigate the 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 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":"
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 […]<\/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-36909","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