CVE-2020-16294 : Exploit Details and Defense Strategies

A buffer overflow vulnerability in epsc_print_page() in devices/gdevepsc.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-2020-16294

This CVE involves a buffer overflow vulnerability in GhostScript v9.50 that could be exploited by a remote attacker to trigger a denial of service attack.

What is CVE-2020-16294?

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

The Impact of CVE-2020-16294

The exploitation of this vulnerability could lead to a denial of service condition, potentially affecting the availability of services relying on the vulnerable GhostScript version.

Technical Details of CVE-2020-16294

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

Vulnerability Description

The buffer overflow vulnerability in epsc_print_page() in devices/gdevepsc.c of GhostScript v9.50 allows attackers to disrupt services by exploiting a crafted PDF file.

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 sending a maliciously crafted PDF file to the target system, triggering the buffer overflow in the affected GhostScript version.

Mitigation and Prevention

Protecting systems from CVE-2020-16294 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update GhostScript to version 9.51 or later to mitigate the vulnerability.
Monitor network traffic for any signs of exploitation.
Implement strong access controls to limit exposure to potential attackers.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and penetration testing to identify and address vulnerabilities.
Educate users and administrators about safe handling of files and emails.

Patching and Updates

Ensure that all systems running GhostScript are updated to version 9.51 or the latest available version to prevent exploitation of the buffer overflow vulnerability.