CVE-2020-21839 : Exploit Details and Defense Strategies
Discover the impact of CVE-2020-21839, a vulnerability in GNU LibreDWG 0.10 that could lead to a memory leak and potential code execution. Learn about mitigation steps and necessary updates.
An issue was discovered in GNU LibreDWG 0.10 that can lead to a memory leak in dwg_decode_eed.
Understanding CVE-2020-21839
What is CVE-2020-21839?
CVE-2020-21839 is a vulnerability found in GNU LibreDWG 0.10 due to crafted input causing a memory leak in dwg_decode_eed.
The Impact of CVE-2020-21839
This vulnerability could be exploited by an attacker to cause a denial of service or potentially execute arbitrary code on the affected system.
Technical Details of CVE-2020-21839
Vulnerability Description
Crafted input in GNU LibreDWG 0.10 can trigger a memory leak in dwg_decode_eed at ../../src/decode.c:3638.
Affected Systems and Versions
- Affected Version: GNU LibreDWG 0.10
Exploitation Mechanism
The vulnerability can be exploited by providing specially crafted input to the vulnerable function, leading to a memory leak.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security patches provided by the vendor.
- Monitor vendor communications for updates and advisories regarding this vulnerability.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Implement input validation mechanisms to prevent crafted inputs from causing vulnerabilities.
Patching and Updates
Ensure that GNU LibreDWG is updated to a version that includes a patch for CVE-2020-21839.