CVE-2023-49129: Stack Overflow Vulnerability in Solid Edge SE2023 Allows Potential System Compromise

Overview

CVE-2023-49129 is a significant cybersecurity threat that affects all versions of Solid Edge SE2023 prior to V223.0 Update 10. This vulnerability, which is a stack overflow issue, is triggered while parsing specially crafted PAR files. This vulnerability exposes users to a potential system compromise or data leakage, posing significant risks to personal, corporate, or sensitive information. Stack overflow issues are particularly concerning because they can allow an attacker to execute code in the context of the current process, potentially leading to a full system compromise.

Vulnerability Summary

CVE ID: CVE-2023-49129
Severity: High (7.8 CVSS)
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Solid Edge SE2023 | All versions < V223.0 Update 10 How the Exploit Works

The vulnerability works by exploiting a stack overflow in Solid Edge SE2023 when parsing PAR files. An attacker crafts a malicious PAR file that causes a buffer overflow in the application’s memory. This overflow can then be used to inject malicious code into the application’s process. The injected code executes with the same permissions as the application itself, potentially allowing an attacker to control the application and compromise the system.

Conceptual Example Code

Here is a conceptual example of how a malicious PAR file might be crafted to exploit this vulnerability. Note that this is a simplified example and real-world exploits may involve more complex techniques.

# Construct the malicious PAR file
malicious_par = "HEADER" + "A"*10000 + "\x90"*16 + shellcode
# Write the malicious PAR file
with open("malicious.par", "w") as f:
f.write(malicious_par)
# Send the malicious PAR file to the target
os.system("scp malicious.par target_user@target:/path/to/SE2023")

This conceptual code creates a malicious PAR file that overflows the application’s stack buffer, followed by a NOP sled and the attacker’s shellcode. The malicious file is then sent to the target system where it can be opened by the vulnerable application, triggering the exploit.

Mitigation Guidance

Users are strongly recommended to apply the vendor-provided patch for Solid Edge SE2023 V223.0 Update 10, which addresses this vulnerability. As a temporary mitigation, users can also implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor for and block malicious network traffic related to this vulnerability. It is also advisable to refrain from opening untrusted PAR files.
Remember, staying updated with the latest patches and maintaining a robust defense-in-depth security posture is the best way to protect your systems against vulnerabilities such as CVE-2023-49129.