CVE-2021-43429 : Exploit Details and Defense Strategies

A Denial of Service vulnerability exists in CORTX-S3 Server due to a failure in releasing locks, impacting the mempool_destroy method.

Understanding CVE-2021-43429

What is CVE-2021-43429?

This CVE describes a Denial of Service vulnerability in the CORTX-S3 Server, specifically related to the mempool_destroy method failing to release locks properly.

The Impact of CVE-2021-43429

The vulnerability can be exploited to trigger a Denial of Service condition in the affected CORTX-S3 Server instances.

Technical Details of CVE-2021-43429

Vulnerability Description

The vulnerability arises from the failure to release locks within the pool->lock of the mempool_destroy method.

Affected Systems and Versions

Product: CORTX-S3 Server
Vendor: n/a
Versions: All versions as of 11/7/2021 are affected

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to cause a Denial of Service attack by leveraging the improper lock release in the mempool_destroy method.

Mitigation and Prevention

Immediate Steps to Take

Monitor for any unusual activity or performance degradation on the CORTX-S3 Server.
Implement network-level controls to mitigate potential exploitation.
Consider temporarily disabling the mempool_destroy method until a patch is available.

Long-Term Security Practices

Regularly update and patch the CORTX-S3 Server to address known vulnerabilities.
Conduct security audits and assessments to identify and remediate potential issues.

Patching and Updates

Apply patches provided by the CORTX-S3 Server vendor to fix the vulnerability and ensure proper lock release in the mempool_destroy method.