CVE-2020-29363 : Security Advisory and Response

An issue was discovered in p11-kit 0.23.6 through 0.23.21 involving a heap-based buffer overflow in the RPC protocol used by p11-kit server/remote commands and the client library.

Understanding CVE-2020-29363

This CVE involves a vulnerability in p11-kit versions 0.23.6 through 0.23.21, leading to a heap-based buffer overflow in the RPC protocol.

What is CVE-2020-29363?

The vulnerability in p11-kit allows a remote entity to trigger a heap-based buffer overflow by supplying a serialized byte array in a CK_ATTRIBUTE, potentially leading to arbitrary code execution.

The Impact of CVE-2020-29363

The vulnerability could be exploited by a remote attacker to execute arbitrary code on the affected system, compromising its integrity and confidentiality.

Technical Details of CVE-2020-29363

This section provides more technical insights into the CVE.

Vulnerability Description

The issue involves a heap-based buffer overflow in the RPC protocol used by p11-kit server/remote commands and the client library.

Affected Systems and Versions

Versions 0.23.6 through 0.23.21 of p11-kit are affected by this vulnerability.

Exploitation Mechanism

By supplying a serialized byte array in a CK_ATTRIBUTE, the remote entity can trigger the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2020-29363 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update p11-kit to a non-vulnerable version if available.
Implement network security measures to restrict access to vulnerable services.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and penetration testing to identify and mitigate vulnerabilities.

Patching and Updates

Stay informed about security advisories and apply patches provided by the vendor to address the vulnerability.