CVE-2023-38336 Explained : Impact and Mitigation

This article provides detailed information about CVE-2023-38336, including its impact, technical details, and mitigation steps.

Understanding CVE-2023-38336

CVE-2023-38336 involves a vulnerability in netkit-rcp in rsh-client 0.17-24 that allows command injection via filenames due to the use of /bin/sh by subsystem. This vulnerability is similar to CVE-2006-0225, CVE-2019-7283, and CVE-2020-15778.

What is CVE-2023-38336?

The CVE-2023-38336 vulnerability in netkit-rcp in rsh-client 0.17-24 permits threat actors to execute arbitrary commands through filenames, exploiting the /bin/sh subsystem.

The Impact of CVE-2023-38336

This vulnerability can lead to unauthorized execution of commands, potentially compromising the target system's integrity and confidentiality.

Technical Details of CVE-2023-38336

Vulnerability Description

The issue arises from improper input validation in netkit-rcp, enabling malicious actors to manipulate filenames to execute arbitrary commands.

Affected Systems and Versions

All systems utilizing netkit-rcp with rsh-client version 0.17-24 are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious filenames to inject and execute arbitrary commands in the target system.

Mitigation and Prevention

To safeguard systems from CVE-2023-38336, immediate action and long-term security practices are crucial.

Immediate Steps to Take

Disable or restrict the use of netkit-rcp in affected versions.
Implement input validation mechanisms to prevent command injections.

Long-Term Security Practices

Regular security audits and vulnerability scans.
Stay updated on patches and security advisories.

Patching and Updates

Apply vendor-supplied patches promptly to address the vulnerability and enhance system security.