CVE-2019-16868 : Security Advisory and Response

emlog through version 6.0.0beta is vulnerable to an arbitrary file deletion flaw that can be exploited through a specific request. This vulnerability allows attackers to delete files by manipulating parameters.

Understanding CVE-2019-16868

emlog, up to version 6.0.0beta, contains a security vulnerability that enables arbitrary file deletion through a crafted request.

What is CVE-2019-16868?

CVE-2019-16868 is a vulnerability in emlog versions up to 6.0.0beta that allows attackers to delete files by sending a malicious request to admin/data.php.

The Impact of CVE-2019-16868

This vulnerability can be exploited by attackers to delete arbitrary files on the affected system, potentially leading to data loss or system compromise.

Technical Details of CVE-2019-16868

emlog through version 6.0.0beta is susceptible to an arbitrary file deletion vulnerability through a specific request.

Vulnerability Description

The vulnerability exists in the handling of the 'bak[]' parameter in the 'admin/data.php?action=dell_all_bak' request, allowing for directory traversal sequences.

Affected Systems and Versions

Product: emlog
Vendor: N/A
Versions affected: up to 6.0.0beta

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a crafted request to 'admin/data.php?action=dell_all_bak' with directory traversal sequences in the 'bak[]' parameter.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2019-16868.

Immediate Steps to Take

Apply security patches or updates provided by the vendor.
Implement proper input validation to prevent directory traversal attacks.
Monitor and analyze system logs for any suspicious activities.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.
Educate users and administrators about secure coding practices and potential threats.
Implement access controls and least privilege principles to limit the impact of potential attacks.
Consider implementing a web application firewall (WAF) to filter and monitor incoming traffic.

Patching and Updates

Ensure that the emlog software is updated to a version that includes a fix for CVE-2019-16868 to prevent exploitation of the arbitrary file deletion vulnerability.