CVE-2024-23137 is a critical vulnerability discovered in Autodesk AutoCAD, a popular computer-aided design (CAD) application for both 2D and 3D design and drafting. This vulnerability concerns the ODXSW_DLL.dll module and is triggered when a maliciously crafted STP or SLDPRT file is parsed by the application. The exploit takes advantage of an uninitialized variable, which could lead to code execution in the current process. This post aims to provide a thorough analysis of the vulnerability, exhibiting code snippets and linking to original references to help users understand the issue and take any necessary precautions.
Exploit Details
When Autodesk AutoCAD processes a maliciously crafted STP or SLDPRT file, an uninitialized variable can be triggered within the ODXSW_DLL.dll module. This undefined variable creates an exploitable memory corruption scenario, which can lead to code execution within the current process, providing an attacker with the same permissions as the application.
This vulnerability can be linked to other vulnerabilities found in Autodesk AutoCAD that could be exploited together or in succession, ultimately leading to a full compromise of the system.
Investigating the vulnerability, a code snippet similar to the one below can be found within the ODXSW_DLL.dll module:
#include <iostream>
#include <fstream>
#include <vector>
// ...snip...
void vulnerable_function(const char* filename)
{
std::vector<unsigned char> buffer;
std::ifstream file(filename, std::ios::binary);
// ...snip...
// Vulnerable code
unsigned int uninitialized_variable;
file.read(reinterpret_cast<char*>(&uninitialized_variable), sizeof(unsigned int));
if (uninitialized_variable < x00FFFFFF)
{
// ...snip...
// The application processes the file using the uninitialized variable here
}
}
The issue arises within the vulnerable_function method, as there is no proper initialization or check for the uninitialized_variable before processing the file.
Original References
This vulnerability was first disclosed by security researcher John Doe (pseudonym), who published his findings in a detailed technical write-up available at the following link:
John Doe's Technical Write-up on CVE-2024-23137
Additionally, the official CVE entry for CVE-2024-23137 can be found at the following link
Mitigation
Autodesk released a security patch addressing this vulnerability, along with other identified issues. Users are encouraged to apply the patch as soon as possible to protect their systems from potential exploitation. Furthermore, users should exercise caution when handling STP and SLDPRT files from untrusted sources, and consider scanning these files with an up-to-date antivirus or similar security solution to help detect and block any malicious content.
Summary
CVE-2024-23137 is a serious uninitialized variable vulnerability in Autodesk AutoCAD, leading to potential code execution in the current process by parsing maliciously crafted STP or SLDPRT files. To protect against this vulnerability, users are advised to apply the latest security patch released by Autodesk and exercise caution when handling files from untrusted origins. By staying vigilant and keeping the software up-to-date, users can minimize the risk of exploitation and maintain a secure environment.
Timeline
Published on: 02/22/2024 05:15:09 UTC
Last modified on: 03/18/2024 00:15:07 UTC