CVE-2019-19480 : What You Need to Know

OpenSC versions 0.19.0 and 0.20.x up to 0.20.0-rc3 contain a flaw in the libopensc/pkcs15-prkey.c file, leading to a flawed free operation within the sc_pkcs15_decode_prkdf_entry function.

Understanding CVE-2019-19480

This CVE identifies a vulnerability in OpenSC versions 0.19.0 and 0.20.x up to 0.20.0-rc3 due to an incorrect free operation in the sc_pkcs15_decode_prkdf_entry function.

What is CVE-2019-19480?

This CVE pertains to a flaw in OpenSC versions 0.19.0 and 0.20.x up to 0.20.0-rc3, where the file libopensc/pkcs15-prkey.c contains a flawed free operation within the sc_pkcs15_decode_prkdf_entry function.

The Impact of CVE-2019-19480

The vulnerability could allow an attacker to exploit the flawed free operation, potentially leading to a denial of service (DoS) or other security compromises.

Technical Details of CVE-2019-19480

OpenSC versions 0.19.0 and 0.20.x up to 0.20.0-rc3 are affected by this vulnerability.

Vulnerability Description

The issue arises from an incorrect free operation in the sc_pkcs15_decode_prkdf_entry function within the libopensc/pkcs15-prkey.c file.

Affected Systems and Versions

OpenSC versions 0.19.0
OpenSC versions 0.20.x up to 0.20.0-rc3

Exploitation Mechanism

Attackers can potentially exploit this vulnerability by manipulating the flawed free operation within the sc_pkcs15_decode_prkdf_entry function.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-19480.

Immediate Steps to Take

Update OpenSC to version 0.20.0 or later to mitigate the vulnerability.
Monitor for any unusual activities that could indicate exploitation of the flaw.

Long-Term Security Practices

Regularly update and patch software to ensure the latest security fixes are in place.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Apply patches provided by OpenSC promptly to address the flaw and enhance system security.