CVE-2020-16307 : Vulnerability Insights and Analysis
Learn about CVE-2020-16307, a null pointer dereference vulnerability in Artifex Software GhostScript v9.50 allowing remote attackers to cause denial of service. Find mitigation steps and updates.
A null pointer dereference vulnerability in devices/vector/gdevtxtw.c and psi/zbfont.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted postscript file. This is fixed in v9.51.
Understanding CVE-2020-16307
This CVE involves a null pointer dereference vulnerability in GhostScript v9.50 that could be exploited by a remote attacker to trigger a denial of service attack.
What is CVE-2020-16307?
The vulnerability in devices/vector/gdevtxtw.c and psi/zbfont.c of GhostScript v9.50 enables an attacker to disrupt the service by utilizing a malicious postscript file.
The Impact of CVE-2020-16307
The exploitation of this vulnerability could lead to a denial of service attack, potentially disrupting the availability of the affected system.
Technical Details of CVE-2020-16307
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability is a null pointer dereference issue in specific files of GhostScript v9.50, allowing attackers to exploit it for a denial of service attack.
Affected Systems and Versions
- Affected Systems: GhostScript v9.50
- Affected Versions: All versions up to v9.50
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious postscript file to trigger the null pointer dereference, leading to a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2020-16307 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update: Ensure GhostScript is updated to version 9.51 or later to mitigate the vulnerability.
- Filter Inputs: Implement input validation mechanisms to prevent the execution of malicious postscript files.
Long-Term Security Practices
- Regular Audits: Conduct regular security audits to identify and address vulnerabilities promptly.
- User Awareness: Educate users on safe computing practices to prevent the execution of potentially harmful files.
Patching and Updates
- Patch Installation: Apply security patches and updates provided by Artifex Software to address known vulnerabilities promptly.