CVE-2017-16834 : Exploit Details and Defense Strategies

PNP4Nagios through version 0.6.26 has a vulnerability where /usr/bin/npcd and npcd.cfg are owned by an unprivileged account, allowing local users to gain privileges by exploiting this access.

Understanding CVE-2017-16834

What is CVE-2017-16834?

This CVE identifies a privilege escalation vulnerability in PNP4Nagios up to version 0.6.26, enabling local users to elevate their privileges by leveraging access to an unprivileged account.

The Impact of CVE-2017-16834

The vulnerability allows local users to escalate their privileges on affected systems, potentially leading to unauthorized access and control.

Technical Details of CVE-2017-16834

Vulnerability Description

The ownership of critical files in PNP4Nagios by an unprivileged account enables local users to exploit this access for privilege escalation.

Affected Systems and Versions

Product: PNP4Nagios
Vendor: N/A
Versions affected: Up to 0.6.26

Exploitation Mechanism

Local users can exploit the ownership of /usr/bin/npcd and npcd.cfg by an unprivileged account to gain elevated privileges on the system.

Mitigation and Prevention

Immediate Steps to Take

Monitor vendor security advisories for patches
Restrict access to vulnerable files
Implement the principle of least privilege

Long-Term Security Practices

Regularly update and patch software
Conduct security training for users on privilege escalation risks

Patching and Updates

Apply patches provided by the vendor to address the privilege escalation vulnerability in PNP4Nagios.