CVE-2018-3871 Explained : Impact and Mitigation

Canvas Draw version 4.0.0 by ACD Systems is vulnerable to an out-of-bounds write issue in its PCX parsing functionality, allowing attackers to execute arbitrary code.

Understanding CVE-2018-3871

This CVE involves a specific vulnerability in Canvas Draw version 4.0.0 that poses a high risk due to its potential impact on confidentiality, integrity, and availability.

What is CVE-2018-3871?

The vulnerability in Canvas Draw version 4.0.0 enables attackers to trigger an out-of-bounds write by exploiting the PCX parsing feature. This could result in the overwriting of critical data, potentially leading to unauthorized code execution.

The Impact of CVE-2018-3871

The CVSS v3.0 base score of 8.8 categorizes this vulnerability as high severity, with significant impacts on confidentiality, integrity, and availability. The attack complexity is low, but successful exploitation requires user interaction.

Technical Details of CVE-2018-3871

Canvas Draw version 4.0.0's vulnerability to an out-of-bounds write attack has the following technical specifics:

Vulnerability Description

The flaw in the PCX parsing functionality allows for an out-of-bounds write, enabling attackers to overwrite data beyond the allocated buffer space.

Affected Systems and Versions

Product: Canvas Draw
Vendor: ACD Systems
Vulnerable Version: ACD Systems Canvas Draw 4.0.0

Exploitation Mechanism

By crafting a malicious PCX image, threat actors can exploit the vulnerability within Canvas Draw version 4.0.0 to achieve an out-of-bounds write, potentially leading to the execution of arbitrary code.

Mitigation and Prevention

To address CVE-2018-3871 and enhance overall security, consider the following steps:

Immediate Steps to Take

Update Canvas Draw to a patched version or apply security fixes provided by the vendor.
Avoid opening PCX images from untrusted or unknown sources.

Long-Term Security Practices

Regularly monitor security advisories and updates from ACD Systems.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Apply patches or updates released by ACD Systems promptly to mitigate the vulnerability and enhance system security.