CVE-2020-16289 : Exploit Details and Defense Strategies

A buffer overflow vulnerability in cif_print_page() in devices/gdevcif.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-2020-16289

This CVE involves a buffer overflow vulnerability in GhostScript that could be exploited by a remote attacker to trigger a denial of service attack.

What is CVE-2020-16289?

The vulnerability in cif_print_page() in devices/gdevcif.c of GhostScript v9.50 allows attackers to disrupt services by using a maliciously crafted PDF file.

The Impact of CVE-2020-16289

The vulnerability could lead to a denial of service attack, potentially causing system crashes or unresponsiveness.

Technical Details of CVE-2020-16289

This section provides more technical insights into the vulnerability.

Vulnerability Description

The buffer overflow vulnerability in cif_print_page() in devices/gdevcif.c of GhostScript v9.50 allows remote attackers to exploit the system via a specially crafted PDF file.

Affected Systems and Versions

Product: Artifex Software GhostScript v9.50
Version: All versions prior to v9.51

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a malicious PDF file to the target system, triggering the buffer overflow and causing a denial of service.

Mitigation and Prevention

Protecting systems from CVE-2020-16289 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update GhostScript to version 9.51 or later to mitigate the vulnerability.
Avoid opening PDF files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Ensure all software components, including GhostScript, are regularly updated to the latest secure versions.