CVE-2018-3858 : Security Advisory and Response

Canvas Draw version 4.0.0 by ACD Systems is affected by a heap overflow vulnerability in its TIFF parsing feature. This flaw allows an attacker to execute arbitrary code by exploiting a specially crafted TIFF image.

Understanding CVE-2018-3858

Canvas Draw version 4.0.0 contains a critical vulnerability that can lead to remote code execution.

What is CVE-2018-3858?

The vulnerability in Canvas Draw version 4.0.0 allows attackers to trigger a heap overflow by using a malicious TIFF image, leading to unauthorized code execution.

The Impact of CVE-2018-3858

The vulnerability has a CVSS base score of 8.8 (High) with a high impact on confidentiality, integrity, and availability. It requires no special privileges to exploit and user interaction is required.

Technical Details of CVE-2018-3858

Canvas Draw version 4.0.0 vulnerability details.

Vulnerability Description

The heap overflow vulnerability in the TIFF parsing feature of Canvas Draw version 4.0.0 allows attackers to perform out-of-bounds writes, potentially leading to code execution.

Affected Systems and Versions

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

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a specially crafted TIFF image to the application, triggering the out-of-bounds write operation and enabling the execution of malicious code.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2018-3858.

Immediate Steps to Take

Update Canvas Draw to a patched version that addresses the heap overflow vulnerability.
Avoid opening TIFF images from untrusted or unknown sources.
Implement network security measures to detect and block malicious TIFF files.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security training to educate users on identifying and handling potentially malicious files.

Patching and Updates

ACD Systems should release a security patch to fix the heap overflow vulnerability in Canvas Draw version 4.0.0.