CVE-2019-9777 : Vulnerability Insights and Analysis

A vulnerability has been found in versions 0.7 and 0.7.1645 of GNU LibreDWG, leading to a heap-based buffer over-read.

Understanding CVE-2019-9777

What is CVE-2019-9777?

This CVE identifies a heap-based buffer over-read vulnerability in GNU LibreDWG versions 0.7 and 0.7.1645, specifically in the function dxf_header_write.

The Impact of CVE-2019-9777

The vulnerability allows attackers to exploit the heap-based buffer over-read, potentially leading to information disclosure or denial of service.

Technical Details of CVE-2019-9777

Vulnerability Description

The issue arises from a heap-based buffer over-read in the function dxf_header_write at header_variables_dxf.spec in GNU LibreDWG.

Affected Systems and Versions

Affected Versions: 0.7, 0.7.1645
Systems using GNU LibreDWG versions 0.7 and 0.7.1645 are vulnerable to this exploit.

Exploitation Mechanism

Attackers can exploit this vulnerability through the function dxf_header_write, potentially causing a heap-based buffer over-read.

Mitigation and Prevention

Immediate Steps to Take

Update GNU LibreDWG to a patched version that addresses the heap-based buffer over-read.
Monitor vendor advisories and security mailing lists for patches and updates.

Long-Term Security Practices

Regularly update software and libraries to mitigate known vulnerabilities.
Implement secure coding practices to prevent buffer over-read vulnerabilities.

Patching and Updates

Apply patches provided by GNU LibreDWG promptly to fix the heap-based buffer over-read vulnerability.