CVE-2018-2367 : Vulnerability Insights and Analysis

In SAP BASIS versions 7.00 to 7.02, 7.10 to 7.11, 7.30, 7.31, 7.40, and 7.50 to 7.52, the ABAP File Interface is vulnerable to a Directory Traversal attack due to insufficient validation of user-provided path information.

Understanding CVE-2018-2367

What is CVE-2018-2367?

CVE-2018-2367 is a vulnerability in SAP BASIS ABAP File Interface versions that allows attackers to pass characters representing 'traverse to parent directory' to file APIs.

The Impact of CVE-2018-2367

This vulnerability can be exploited by attackers to navigate to restricted directories and potentially access sensitive information.

Technical Details of CVE-2018-2367

Vulnerability Description

The vulnerability arises from inadequate validation of user-supplied path information, enabling malicious actors to perform directory traversal attacks.

Affected Systems and Versions

SAP BASIS (ABAP File Interface) versions 7.00 to 7.02
SAP BASIS (ABAP File Interface) versions 7.10 to 7.11
SAP BASIS (ABAP File Interface) version 7.30
SAP BASIS (ABAP File Interface) version 7.31
SAP BASIS (ABAP File Interface) version 7.40
SAP BASIS (ABAP File Interface) versions 7.50 to 7.52

Exploitation Mechanism

Attackers exploit the lack of proper validation in the ABAP File Interface to manipulate path information and access unauthorized directories.

Mitigation and Prevention

Immediate Steps to Take

Apply the necessary security patches provided by SAP to address this vulnerability.
Implement strict input validation mechanisms to prevent directory traversal attacks.

Long-Term Security Practices

Regularly update and patch SAP BASIS to mitigate potential security risks.
Conduct security audits and assessments to identify and address vulnerabilities proactively.

Patching and Updates

Stay informed about security updates and advisories from SAP.
Ensure timely application of patches to secure the ABAP File Interface in SAP BASIS.