{"id":37179,"date":"2025-05-11T18:13:58","date_gmt":"2025-05-11T18:13:58","guid":{"rendered":""},"modified":"2025-10-29T04:22:09","modified_gmt":"2025-10-29T10:22:09","slug":"cve-2023-39275-critical-integer-overflow-vulnerabilities-in-gtkwave-3-3-115","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-39275-critical-integer-overflow-vulnerabilities-in-gtkwave-3-3-115\/","title":{"rendered":"CVE-2023-39275: Critical Integer Overflow Vulnerabilities in GTKWave 3.3.115<\/strong>"},"content":{"rendered":"

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

The Common Vulnerabilities and Exposures (CVE) identifier CVE-2023-39275 is a serious security vulnerability affecting GTKWave 3.3.115. This vulnerability specifically concerns the LXT2 facgeometry parsing functionality within the software. Multiple integer overflow vulnerabilities exist within this functionality, and they have the potential to lead to arbitrary code execution<\/a>. This risk is of significant concern to system administrators and end-users, as any successful exploitation could result in system compromise<\/a> or data leakage.<\/p>\n

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

CVE ID: CVE-2023-39275
\nSeverity: High (7.8)
\nAttack Vector: File-based, via a specially crafted .lxt2 file<\/a>
\nPrivileges Required: None
\nUser Interaction: Required (Victim needs to open a malicious file)
\nImpact: Arbitrary code<\/a> execution, potential system compromise, or 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 integer overflow vulnerabilities within the LXT2 facgeometry parsing functionality of GTKWave<\/a>. An attacker crafts a malicious .lxt2 file to trigger these vulnerabilities<\/a>. When a victim opens this file, the software attempts to allocate the `value` array based on the crafted inputs. However, due to the integer overflow<\/a>, the software ends up allocating less memory than required. This discrepancy can lead to a buffer overflow<\/a>, where data spills over to adjacent memory locations, potentially leading to arbitrary code execution.<\/p>\n

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

The following pseudocode demonstrates a conceptual example of how the vulnerability might be exploited<\/a>.<\/p>\n

\/\/ Pseudocode for a crafted .lxt2 file\n\/\/ Arbitrary values that would cause an integer overflow when multiplied\nint malicious_value1 = INT_MAX;\nint malicious_value2 = 2;\n\/\/ The malicious .lxt2 file would contain such values that when the software\n\/\/ tries to allocate memory for the `value` array, an integer overflow occurs\nvalue_array_size = malicious_value1 * malicious_value2; \/\/ Causes integer overflow\nvalue_array = new int[value_array_size]; \/\/ Allocates less memory than required\n\/\/ The following data would then overflow to adjacent memory regions\nfor (int i=0; i<\/pre>\n
Users are strongly advised to apply the vendor patch as soon as it's available or use WAF\/IDS as a temporary mitigation measure against potential exploit attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The Common Vulnerabilities and Exposures (CVE) identifier CVE-2023-39275 is a serious security vulnerability affecting GTKWave 3.3.115. This vulnerability specifically concerns the LXT2 facgeometry parsing functionality within the software. Multiple integer overflow vulnerabilities exist within this functionality, and they have the potential to lead to arbitrary code execution. This risk is of significant concern to […]<\/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":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-37179","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","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