CVE-2019-20913 : Security Advisory and Response
Learn about CVE-2019-20913, a vulnerability in GNU LibreDWG versions 0.9.3 and below allowing for a heap-based buffer over-read. Find out how to mitigate and prevent exploitation.
A vulnerability has been identified in GNU LibreDWG versions 0.9.3 and below, allowing for a heap-based buffer over-read.
Understanding CVE-2019-20913
What is CVE-2019-20913?
Crafted input can lead to excessive reading from a buffer in the heap, specifically in the dwg_encode_entity function within the common_entity_data.spec file.
The Impact of CVE-2019-20913
This vulnerability can be exploited to cause a heap-based buffer over-read in GNU LibreDWG versions 0.9.3 and earlier.
Technical Details of CVE-2019-20913
Vulnerability Description
Deliberately manipulated input can result in excessive reading from a buffer located in the heap, specifically in the common_entity_data.spec file within the dwg_encode_entity function.
Affected Systems and Versions
- Affected Version: GNU LibreDWG versions 0.9.3 and below
Exploitation Mechanism
The vulnerability can be exploited by providing crafted input to trigger the heap-based buffer over-read.
Mitigation and Prevention
Immediate Steps to Take
- Update GNU LibreDWG to a version that includes a patch for CVE-2019-20913
- Avoid opening untrusted DWG files
Long-Term Security Practices
- Regularly update software and libraries to the latest versions
- Implement input validation mechanisms to prevent crafted inputs
Patching and Updates
Ensure timely application of security patches and updates provided by GNU LibreDWG.