CVE-2020-23861 Explained : Impact and Mitigation
Learn about CVE-2020-23861, a heap-based buffer overflow vulnerability in LibreDWG 0.10.1 that allows denial of service attacks by submitting malicious DWG files. Find mitigation steps and prevention measures.
A heap-based buffer overflow vulnerability in LibreDWG 0.10.1 can lead to a denial of service by submitting a malicious DWG file.
Understanding CVE-2020-23861
This CVE involves a specific vulnerability in LibreDWG 0.10.1 that can be exploited to cause a denial of service.
What is CVE-2020-23861?
The vulnerability is a heap-based buffer overflow in LibreDWG 0.10.1 triggered by the read_system_page function at libredwg-0.10.1/src/decode_r2007.c:666:5 when processing DWG files.
The Impact of CVE-2020-23861
Exploiting this vulnerability can result in a denial of service condition by submitting a crafted DWG file.
Technical Details of CVE-2020-23861
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability is a heap-based buffer overflow in LibreDWG 0.10.1, specifically in the read_system_page function, allowing attackers to crash the application.
Affected Systems and Versions
- Affected Version: LibreDWG 0.10.1
Exploitation Mechanism
Attackers can exploit this vulnerability by submitting a malicious DWG file, triggering the buffer overflow and causing a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2020-23861 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Avoid opening DWG files from untrusted sources
- Apply security patches or updates provided by LibreDWG
Long-Term Security Practices
- Regularly update software and libraries to the latest versions
- Implement network security measures to detect and block malicious activities
Patching and Updates
LibreDWG users should apply the latest patches and updates released by the vendor to mitigate the vulnerability.