A vulnerability identified as CVE-2023-3739 has been discovered in Chromad, a component of Google Chrome on ChromeOS. This vulnerability allows a remote attacker to execute arbitrary code on the target system by crafting a malicious shell script due to insufficient validation of untrusted input. The Chromium security team has rated the severity of this vulnerability as "Low."

In this article, we will discuss the details of the CVE-2023-3739 vulnerability, including the affected versions of ChromeOS, a code snippet to demonstrate the exploit, and links to the original references. We will also provide guidance on how to mitigate the risk associated with this vulnerability.

Details of the Vulnerability

The CVE-2023-3739 vulnerability stems from insufficient validation of untrusted input in the Chromad component in Google Chrome on ChromeOS. An attacker can craft a malicious shell script to exploit this vulnerability, leading to arbitrary code execution on the target system.

The ChromeOS versions affected by this vulnerability are those prior to 115..579.131. In order to exploit this vulnerability, an attacker would need to convince a user to download and execute the malicious script.

Code Snippet Demonstrating the Exploit

Below is a hypothetical example of a malicious shell script that could exploit the CVE-2023-3739 vulnerability:

# Example of a malicious shell script that exploits CVE-2023-3739
echo "Exploiting CVE-2023-3739 in Chromad on vulnerable ChromeOS versions"
payload="echo Arbitrary code executed through CVE-2023-3739"
chromad_input_processing_functionality --input="$payload" --allow-malicious-code

In this example, the arbitrary code ($payload) would be executed due to improper validation of user input by the chromad_input_processing_functionality function.

1. Chromium Security Advisory - Google's official blog post about the stable channel update that addresses this vulnerability.
2. CVE-2023-3739 Record - The official CVE record of this vulnerability.

Mitigation and Recommendations

To mitigate the risk associated with this vulnerability, users should update their ChromeOS to version 115..579.131 or later. This update includes a fix for CVE-2023-3739, as well as other security improvements.


CVE-2023-3739 is a low-severity vulnerability affecting Chromad in Google Chrome on ChromeOS. Although its impact is limited, users are advised to update their systems to the latest version of ChromeOS and practice safe online habits.

Stay updated on the latest security news and threats by following reputable sources, and always ensure that your devices are running the most recent software versions to protect yourself from known vulnerabilities like CVE-2023-3739.


Published on: 08/01/2023 23:15:00 UTC
Last modified on: 08/15/2023 16:03:00 UTC