CVE-2020-16308 : Security Advisory and Response

A buffer overflow vulnerability in p_print_image() in devices/gdevcdj.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-2020-16308

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-2020-16308?

The vulnerability in p_print_image() in devices/gdevcdj.c of GhostScript v9.50 enables an attacker to disrupt services by using a maliciously crafted PDF file.

The Impact of CVE-2020-16308

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

Technical Details of CVE-2020-16308

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The buffer overflow vulnerability in GhostScript v9.50 allows attackers to exploit the p_print_image() function in devices/gdevcdj.c using 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 remotely by sending a malicious PDF file to the target system, triggering the buffer overflow in the affected function.

Mitigation and Prevention

Protecting systems from CVE-2020-16308 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 security measures to detect and block malicious PDF files.

Patching and Updates

Ensure that all systems running GhostScript are updated to version 9.51 or the latest release to address the buffer overflow vulnerability.