CVE-2020-16304 : Exploit Details and Defense Strategies

A buffer overflow vulnerability in image_render_color_thresh() in base/gxicolor.c of Artifex Software GhostScript v9.50 allows a remote attacker to escalate privileges via a crafted eps file. This is fixed in v9.51.

Understanding CVE-2020-16304

This CVE involves a buffer overflow vulnerability in GhostScript that could be exploited by a remote attacker to elevate privileges.

What is CVE-2020-16304?

The vulnerability in Artifex Software GhostScript v9.50 enables an attacker to execute arbitrary code by sending a specially crafted eps file, potentially leading to privilege escalation.

The Impact of CVE-2020-16304

The exploitation of this vulnerability could result in unauthorized access, data manipulation, or disruption of services on affected systems.

Technical Details of CVE-2020-16304

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

Vulnerability Description

The buffer overflow occurs in the image_render_color_thresh() function in base/gxicolor.c of GhostScript v9.50, allowing attackers to manipulate memory and execute malicious code.

Affected Systems and Versions

Affected Systems: All systems running GhostScript v9.50
Affected Versions: GhostScript v9.50

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious eps file and sending it to a vulnerable GhostScript instance, triggering the buffer overflow and potentially gaining elevated privileges.

Mitigation and Prevention

Protecting systems from CVE-2020-16304 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update GhostScript to version 9.51 or the latest available release to mitigate the vulnerability.
Implement network security measures to restrict access to vulnerable services.

Long-Term Security Practices

Regularly update software and apply security patches promptly to prevent known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses in the system.

Patching and Updates

Ensure continuous monitoring for security advisories and updates related to GhostScript to stay informed about new patches and security fixes.