CVE-2019-16166 Explained : Impact and Mitigation

GNU cflow up to version 1.6 is vulnerable to a heap-based buffer over-read in the nexttoken function in parser.c.

Understanding CVE-2019-16166

In the parser.c file of GNU cflow up to version 1.6, there is a vulnerability that causes a heap-based buffer over-read when executing the nexttoken function.

What is CVE-2019-16166?

This CVE refers to a specific vulnerability in GNU cflow that allows for a heap-based buffer over-read, potentially leading to security issues.

The Impact of CVE-2019-16166

The vulnerability can be exploited to cause a heap-based buffer over-read, which may result in information disclosure or potentially arbitrary code execution.

Technical Details of CVE-2019-16166

GNU cflow through version 1.6 has a heap-based buffer over-read in the nexttoken function in parser.c.

Vulnerability Description

The vulnerability in GNU cflow allows for a heap-based buffer over-read, posing a security risk during the execution of the nexttoken function.

Affected Systems and Versions

Product: GNU cflow
Vendor: N/A
Versions affected: Up to version 1.6

Exploitation Mechanism

The vulnerability can be exploited by triggering the nexttoken function in the parser.c file, leading to a heap-based buffer over-read.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2019-16166.

Immediate Steps to Take

Update GNU cflow to a patched version that addresses the heap-based buffer over-read vulnerability.
Monitor for any unusual activities that might indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update software and apply patches to mitigate known vulnerabilities.
Conduct security assessments and audits to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories related to GNU cflow and promptly apply patches released by the vendor to address vulnerabilities.