CVE-2018-3973 : Security Advisory and Response

Canvas Draw version 5.0.0 by ACD Systems, as reported by Talos, is vulnerable to an out-of-bounds write issue in the CAL parsing feature. This vulnerability can be exploited by a specially crafted CAL image, potentially allowing an attacker to execute arbitrary code.

Understanding CVE-2018-3973

This CVE involves a high-severity vulnerability in Canvas Draw version 5.0.0, impacting confidentiality, integrity, and availability.

What is CVE-2018-3973?

The vulnerability in the CAL parsing feature of Canvas Draw version 5.0.0 allows attackers to manipulate the application to write data beyond its intended bounds, potentially overwriting arbitrary data. By delivering a PCX image, attackers can execute their own code.

The Impact of CVE-2018-3973

The vulnerability has a CVSS base score of 8.8, indicating a high severity level. It can lead to out-of-bounds write code execution, posing risks to confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2018-3973

Canvas Draw version 5.0.0 is affected by this vulnerability, as reported by Talos.

Vulnerability Description

An out-of-bounds write vulnerability exists in the CAL parsing functionality of Canvas Draw 5.0.0. A specially crafted CAL image can trigger this issue, leading to overwriting arbitrary data and potential code execution.

Affected Systems and Versions

Product: ACD Systems
Vendor: Talos
Vulnerable Version: ACDSystems Canvas Draw 5.0.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Impact: High on Availability, Confidentiality, and Integrity

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of CVE-2018-3973.

Immediate Steps to Take

Apply security patches or updates provided by the vendor.
Consider restricting network access to affected systems.
Educate users about the risks associated with opening files from untrusted sources.

Long-Term Security Practices

Regularly update software and applications to the latest versions.
Implement network segmentation to contain potential attacks.
Conduct security training for employees to enhance awareness of social engineering tactics.

Patching and Updates

Check for security advisories from ACD Systems and Talos regarding patches for Canvas Draw version 5.0.0.
Apply patches promptly to mitigate the risk of exploitation.