CVE-2019-17401 Explained : Impact and Mitigation

A heap-based buffer over-read vulnerability has been identified in libyal liblnk 20191006, distinct from CVE-2019-17264. The vendor has raised concerns regarding this issue.

Understanding CVE-2019-17401

This CVE involves a heap-based buffer over-read in the code block for network_share_name_offset>20 within liblnk_location_information_read_data in liblnk_location_information.c in libyal liblnk 20191006.

What is CVE-2019-17401?

The vulnerability in libyal liblnk 20191006 allows for a heap-based buffer over-read, posing a security risk.

The Impact of CVE-2019-17401

The vulnerability could potentially lead to information disclosure or denial of service if exploited by malicious actors.

Technical Details of CVE-2019-17401

The technical aspects of the vulnerability are as follows:

Vulnerability Description

A heap-based buffer over-read is present in the network_share_name_offset>20 code block of liblnk_location_information_read_data in liblnk_location_information.c.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited by manipulating the network_share_name_offset parameter to trigger the buffer over-read.

Mitigation and Prevention

To address CVE-2019-17401, consider the following steps:

Immediate Steps to Take

Monitor vendor communications for patches or workarounds.
Implement network security measures to detect and block potential exploitation attempts.

Long-Term Security Practices

Regularly update software and libraries to patched versions.
Conduct security assessments and code reviews to identify and address similar vulnerabilities.

Patching and Updates

Stay informed about patches and updates released by the vendor to mitigate the vulnerability.