CVE-2019-1000018 : Security Advisory and Response

This CVE-2019-1000018 article provides insights into a Command Injection vulnerability in rssh version 2.3.4, allowing local command execution by authorized SSH users.

Understanding CVE-2019-1000018

CVE-2019-1000018 involves a security flaw in rssh version 2.3.4 that permits local command execution through the allowscp permission.

What is CVE-2019-1000018?

The allowscp permission in rssh version 2.3.4 is vulnerable to a CWE-77: Command Injection flaw, enabling local command execution by authorized SSH users.

The Impact of CVE-2019-1000018

This vulnerability can be exploited by an authorized SSH user with the allowscp permission, potentially leading to unauthorized command execution.

Technical Details of CVE-2019-1000018

CVE-2019-1000018 involves a Command Injection vulnerability in rssh version 2.3.4.

Vulnerability Description

The allowscp permission in rssh version 2.3.4 is susceptible to a CWE-77: Command Injection flaw, allowing local command execution.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: 2.3.4

Exploitation Mechanism

The vulnerability can be exploited by an authorized SSH user with the allowscp permission, enabling them to execute arbitrary commands.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-1000018 vulnerability.

Immediate Steps to Take

Update rssh to a patched version that addresses the Command Injection vulnerability.
Restrict SSH access to trusted users only.
Monitor SSH logs for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software to prevent known vulnerabilities.
Implement the principle of least privilege to restrict user permissions.

Patching and Updates

Apply security patches provided by the rssh vendor promptly to mitigate the Command Injection vulnerability.