Overview
The Common Vulnerabilities and Exposures (CVE) list has identified a critical vulnerability in the decompression functionality of GTKWave 3.3.115. TKWave is a fully featured GTK+ based wave viewer for Unix, Win32, and Mac OSX. Users across these operating systems are potentially affected by this vulnerability. The identified flaw, CVE-2023-35964, could allow a malicious actor to execute arbitrary commands on an affected system, leading to potential system compromise or data leakage. The importance of addressing these vulnerabilities cannot be overstated as they pose a significant risk to the security and integrity of user systems and data.
Vulnerability Summary
CVE ID: CVE-2023-35964
Severity: High (7.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: Required
Impact: System compromise, data leakage
Affected Products
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Product | Affected Versions
GTKWave | 3.3.115
How the Exploit Works
The vulnerability lies in the decompression functionality of the `vcd2lxt` utility in GTKWave. This utility is susceptible to OS command injection vulnerabilities. A malicious actor could exploit this vulnerability by creating a specially crafted wave file, which when opened by the victim, triggers the vulnerabilities and leads to arbitrary command execution. This could potentially result in a full system compromise or data leakage.
Conceptual Example Code
Below is a
conceptual
example of how an attacker might craft a malicious wave file to exploit this vulnerability. This is for illustrative purposes only and should not be used for malicious purposes.
# Create a wave file with malicious OS command injection
$ echo "OS_COMMAND_HERE" > malicious.wav
# The victim opens the malicious wave file
$ vcd2lxt malicious.wav
# The malicious OS command is executedMitigation Guidance
The recommended mitigation guidance for CVE-2023-35964 is to apply the vendor-provided patch. This patch addresses the vulnerabilities by adequately sanitizing input to the `vcd2lxt` utility and preventing arbitrary command execution. In the absence of this patch, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to monitor and block suspicious activity. However, this is a temporary solution and users are strongly advised to apply the patch from the vendor as soon as possible to fully mitigate this vulnerability.