CVE-2023-35194 : Exploit Details and Defense Strategies

A detailed overview of the OS command injection vulnerability in Peplink Surf SOHO HW1 v6.3.5 (in QEMU) that allows for remote code execution.

Understanding CVE-2023-35194

This section provides insights into the impact, technical details, and mitigation strategies for CVE-2023-35194.

What is CVE-2023-35194?

The CVE-2023-35194 vulnerability involves an OS command injection flaw in the api.cgi cmd.mvpn.x509.write functionality of Peplink Surf SOHO HW1 v6.3.5 (in QEMU). Attackers can exploit this vulnerability via a specially crafted HTTP request to execute arbitrary commands.

The Impact of CVE-2023-35194

The vulnerability poses a high risk as it can lead to remote code execution, allowing attackers to gain unauthorized access, manipulate system data, and disrupt services on affected systems.

Technical Details of CVE-2023-35194

Explore the specifics of the vulnerability, affected systems, and exploitation methods.

Vulnerability Description

The vulnerability arises due to improper neutralization of special elements used in an OS command, enabling malicious actors to inject and execute commands through the

system

call in the file

/web/MANGA/cgi-bin/api.cgi

for firmware version 6.3.5 at offset

0x4bde44

.

Affected Systems and Versions

The affected product is Peplink Surf SOHO HW1 v6.3.5 (in QEMU) and the specific version under risk is

v6.3.5

. Users of this version are susceptible to exploitation if system configurations remain unchanged.

Exploitation Mechanism

Exploiting the CVE-2023-35194 vulnerability involves crafting a malicious HTTP request to the

cmd.mvpn.x509.write

functionality, triggering the execution of unauthorized commands with high impact on confidentiality, integrity, and availability.

Mitigation and Prevention

Learn about immediate steps to secure affected systems and long-term security best practices.

Immediate Steps to Take

Users are advised to update the firmware to a secure version, restrict network access to the api.cgi functionality, and monitor for any unusual HTTP requests targeting the vulnerable endpoint.

Long-Term Security Practices

Implement regular security audits, train staff on identifying suspicious activity, and maintain up-to-date knowledge on emerging vulnerabilities to enhance overall security posture.

Patching and Updates

Vendors may release patches to address the CVE-2023-35194 vulnerability. Users must promptly apply these updates to eliminate the risk of exploitation and safeguard their systems from potential threats.