CVE-2024-23948 in libigl
Summary
by MITRE • 05/28/2024
Multiple improper array index validation vulnerabilities exist in the readMSH functionality of libigl v2.5.0. A specially crafted .msh file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability concerns the `igl::MshLoader::parse_nodes` function while handling an `ascii`.msh` file.
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Analysis
by VulDB Data Team • 03/27/2025
The vulnerability CVE-2024-23948 represents a critical improper array index validation flaw within the libigl library version 2.5.0, specifically affecting the readMSH functionality. This issue manifests in the `igl::MshLoader::parse_nodes` function when processing ascii .msh files, creating a pathway for out-of-bounds write conditions that can be exploited by malicious actors. The vulnerability stems from inadequate input validation mechanisms that fail to properly sanitize array indices during the parsing of mesh file structures, allowing attackers to craft specially formatted .msh files that manipulate memory boundaries beyond intended limits.
The technical exploitation of this vulnerability occurs through the manipulation of array indexing operations within the mesh file parsing logic. When the library processes an ascii .msh file containing malformed index values, the `parse_nodes` function fails to validate boundary conditions properly, leading to memory corruption through out-of-bounds write operations. This type of vulnerability falls under CWE-129 which specifically addresses improper validation of array indices, and can be classified as a memory safety issue that directly impacts the integrity of the application's memory management. The flaw demonstrates characteristics consistent with ATT&CK technique T1059.007 for application execution through file parsing, where malicious input triggers unintended code execution patterns.
The operational impact of this vulnerability extends beyond simple memory corruption, as it creates potential for arbitrary code execution and system compromise. An attacker who successfully triggers this vulnerability can manipulate memory contents in ways that may lead to privilege escalation, denial of service conditions, or data corruption within applications that rely on libigl for mesh processing operations. The vulnerability affects any software system that utilizes libigl v2.5.0 for reading .msh files, particularly those in computational geometry, finite element analysis, and 3D modeling applications. Given that .msh files are commonly used in engineering and scientific computing environments, the potential attack surface includes research institutions, manufacturing systems, and simulation platforms that process mesh data.
Mitigation strategies for this vulnerability should prioritize immediate library version updates to address the root cause of improper array validation. System administrators and developers should implement strict input validation measures that enforce boundary checks on all array indexing operations within mesh file parsing functions. Additional protective measures include sandboxing mesh file processing operations, implementing memory corruption detection mechanisms, and establishing automated scanning protocols for malicious .msh file content. The vulnerability also highlights the importance of secure coding practices in scientific computing libraries, emphasizing the need for comprehensive input validation and robust error handling in file parsing operations. Organizations should conduct thorough security assessments of their software dependencies to identify similar vulnerabilities in other mesh processing libraries and implement defensive programming techniques that prevent out-of-bounds memory access patterns.