CVE-2021-33650 : What You Need to Know

This CVE refers to a vulnerability found in openEuler's MindSpore when performing the inference shape operation of the SparseToDense operator. The issue occurs when the number of inputs is less than three, leading to data access beyond the bounds of allocated heap buffers.

Understanding CVE-2021-33650

This section will cover the details of the CVE-2021-33650 vulnerability.

What is CVE-2021-33650?

CVE-2021-33650 involves an out-of-bounds read vulnerability (CWE-125) in openEuler's MindSpore, triggered during the inference shape operation of the SparseToDense operator.

The Impact of CVE-2021-33650

The vulnerability allows attackers to access data outside of input bounds, potentially leading to unauthorized information disclosure or system crashes.

Technical Details of CVE-2021-33650

Let's delve deeper into the technical aspects of CVE-2021-33650.

Vulnerability Description

The flaw arises due to insufficient input validation, enabling the access of data outside permissible boundaries.

Affected Systems and Versions

The impacted product is openEuler's MindSpore version >= 1.2.0 and < 1.3.0.

Exploitation Mechanism

An attacker can exploit this vulnerability by providing specifically crafted input data to trigger the out-of-bounds read.

Mitigation and Prevention

Here are the steps to mitigate and prevent the exploitation of CVE-2021-33650.

Immediate Steps to Take

Update to a patched version of MindSpore >= 1.3.0 to mitigate the vulnerability.
Implement input validation checks to ensure data access stays within defined boundaries.

Long-Term Security Practices

Regularly monitor security advisories and updates from openEuler to stay informed about potential vulnerabilities.

Patching and Updates

Apply security patches promptly to address known vulnerabilities and enhance system security.