CVE-2018-16424 : Exploit Details and Defense Strategies

OpenSC before version 0.19.0-rc1 is vulnerable to a double free issue in the eGK card tool, potentially leading to a denial of service or other impacts.

Understanding CVE-2018-16424

OpenSC's eGK card tool is susceptible to exploitation through manipulated smartcards, causing application crashes or other consequences.

What is CVE-2018-16424?

This CVE describes a double free vulnerability in OpenSC's eGK card tool, specifically in the read_file function, allowing attackers to disrupt the application's functionality.

The Impact of CVE-2018-16424

The vulnerability could result in a denial of service, leading to application crashes or potentially causing other unspecified impacts.

Technical Details of CVE-2018-16424

OpenSC's eGK card tool is affected by a critical vulnerability that can be exploited by attackers.

Vulnerability Description

A double free issue in the read_file function of the eGK card tool in OpenSC before version 0.19.0-rc1 allows attackers to disrupt the application's operation.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions before 0.19.0-rc1

Exploitation Mechanism

Attackers can exploit this vulnerability by providing manipulated smartcards to the eGK card tool, triggering the double free issue.

Mitigation and Prevention

To address CVE-2018-16424, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Update OpenSC to version 0.19.0-rc1 or later to mitigate the vulnerability.
Monitor for any unusual activities related to smartcard interactions.

Long-Term Security Practices

Regularly update software and firmware to patch known vulnerabilities.
Implement access controls to limit smartcard interactions to trusted sources.

Patching and Updates

Ensure timely installation of security updates and patches provided by OpenSC to prevent exploitation of this vulnerability.