CVE-2020-16288 : Security Advisory and Response

A buffer overflow vulnerability in pj_common_print_page() in devices/gdevpjet.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-2020-16288

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-2020-16288?

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

The Impact of CVE-2020-16288

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

Technical Details of CVE-2020-16288

This section provides more technical insights into the vulnerability.

Vulnerability Description

The buffer overflow vulnerability in GhostScript v9.50 enables attackers to exploit the pj_common_print_page() function, leading to a denial of service.

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 specially crafted PDF file to the target system, triggering the buffer overflow and causing a denial of service.

Mitigation and Prevention

Protecting systems from CVE-2020-16288 requires immediate actions and long-term security practices.

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 that all systems running GhostScript are updated to the latest version (v9.51) to address the buffer overflow vulnerability.