CVE-2018-16391 Explained : Impact and Mitigation

OpenSC before version 0.19.0-rc1 is vulnerable to multiple buffer overflows in the muscle_list_files function, potentially leading to denial of service or other consequences.

Understanding CVE-2018-16391

OpenSC versions prior to 0.19.0-rc1 are susceptible to buffer overflows, allowing attackers to exploit the muscle_list_files function.

What is CVE-2018-16391?

Multiple buffer overflows in the muscle_list_files function in OpenSC versions before 0.19.0-rc1 can be exploited by attackers using manipulated smartcards, leading to a denial of service or other unspecified outcomes.

The Impact of CVE-2018-16391

The vulnerability can result in a denial of service (application crash) or potentially have other unspecified consequences.

Technical Details of CVE-2018-16391

OpenSC versions prior to 0.19.0-rc1 are affected by buffer overflows in the muscle_list_files function.

Vulnerability Description

The vulnerability arises from handling responses from a Muscle Card, allowing attackers with crafted smartcards to cause a denial of service or other impacts.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions affected: OpenSC versions before 0.19.0-rc1

Exploitation Mechanism

Attackers can exploit the buffer overflows by providing manipulated smartcards, triggering the muscle_list_files function.

Mitigation and Prevention

Immediate Steps to Take:

Update OpenSC to version 0.19.0-rc1 or later
Monitor vendor advisories for patches and updates Long-Term Security Practices:
Regularly update software and firmware to the latest versions
Implement strong access controls and authentication mechanisms
Conduct regular security assessments and audits

Patching and Updates

Ensure timely installation of security patches and updates provided by OpenSC to address the vulnerability.