CVE-2020-16295 : What You Need to Know
Learn about CVE-2020-16295, a null pointer dereference vulnerability in GhostScript v9.50 that allows remote attackers to cause denial of service via a crafted PDF file. Find mitigation steps and preventive measures here.
A null pointer dereference vulnerability in clj_media_size() in devices/gdevclj.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted PDF file. This is fixed in v9.51.
Understanding CVE-2020-16295
This CVE involves a vulnerability in GhostScript that could be exploited by a remote attacker to trigger a denial of service attack.
What is CVE-2020-16295?
The CVE-2020-16295 is a null pointer dereference vulnerability in the clj_media_size() function in devices/gdevclj.c of Artifex Software GhostScript v9.50.
The Impact of CVE-2020-16295
The vulnerability allows a remote attacker to exploit a crafted PDF file to cause a denial of service on the affected system.
Technical Details of CVE-2020-16295
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability arises from a null pointer dereference issue in the clj_media_size() function within GhostScript v9.50.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by a remote attacker through a specially crafted PDF file.
Mitigation and Prevention
Protective measures and actions to mitigate the impact of CVE-2020-16295.
Immediate Steps to Take
- Update GhostScript to version 9.51, where the vulnerability is fixed.
- Avoid opening PDF files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network security measures to prevent unauthorized access.
Patching and Updates
Ensure timely installation of security updates and patches to address known vulnerabilities.