CVE-2019-20019 : Exploit Details and Defense Strategies

A case was found where there was an excessive allocation of memory attempted in Mat_VarRead5 function within the mat5.c file of matio version 1.5.17.

Understanding CVE-2019-20019

An attempted excessive memory allocation was discovered in Mat_VarRead5 in mat5.c in matio 1.5.17.

What is CVE-2019-20019?

CVE-2019-20019 refers to a vulnerability in matio version 1.5.17 where an excessive memory allocation was attempted in the Mat_VarRead5 function.

The Impact of CVE-2019-20019

This vulnerability could potentially lead to a denial of service (DoS) condition due to the excessive allocation of memory.

Technical Details of CVE-2019-20019

Vulnerability Description

The vulnerability involves an excessive memory allocation attempt in the Mat_VarRead5 function within the mat5.c file of matio version 1.5.17.

Affected Systems and Versions

Systems running matio version 1.5.17 are affected by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by triggering the excessive memory allocation in the Mat_VarRead5 function, potentially leading to a DoS condition.

Mitigation and Prevention

Immediate Steps to Take

Users should update matio to a non-vulnerable version to mitigate the risk.
Implement proper input validation to prevent malicious inputs triggering excessive memory allocation.

Long-Term Security Practices

Regularly monitor and update software to ensure the latest security patches are applied.
Conduct security assessments and audits to identify and address vulnerabilities proactively.

Patching and Updates

Apply patches provided by the software vendor promptly to address the vulnerability and enhance system security.