CVE-2019-7714 : Exploit Details and Defense Strategies

A vulnerability has been identified in Green Hills INTEGRITY RTOS 5.0.4, specifically in the Interpeak IPWEBS component, leading to a stack-based buffer overflow due to insufficient memory allocation for the HTTP Authentication header.

Understanding CVE-2019-7714

This CVE pertains to a flaw in the Interpeak IPWEBS component of Green Hills INTEGRITY RTOS 5.0.4, where a stack-based buffer overflow occurs due to inadequate memory allocation for the HTTP Authentication header.

What is CVE-2019-7714?

This vulnerability arises from the allocation of only 60 bytes for the HTTP Authentication header in Green Hills INTEGRITY RTOS 5.0.4. Insufficient validation during header copying leads to a stack-based buffer overflow.

The Impact of CVE-2019-7714

The lack of proper boundary checks in copying the HTTP Authentication header can allow attackers to exploit this vulnerability, potentially leading to unauthorized access, denial of service, or arbitrary code execution.

Technical Details of CVE-2019-7714

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw in Interpeak IPWEBS on Green Hills INTEGRITY RTOS 5.0.4 results from copying the HTTP Authentication header without verifying its size, causing a stack-based buffer overflow.

Affected Systems and Versions

Affected Systems: Green Hills INTEGRITY RTOS 5.0.4
Affected Component: Interpeak IPWEBS
Versions: All versions of Green Hills INTEGRITY RTOS 5.0.4

Exploitation Mechanism

The vulnerability is exploited by crafting a malicious HTTP Authentication header that exceeds the allocated 60 bytes, triggering a buffer overflow and potentially allowing an attacker to execute arbitrary code.

Mitigation and Prevention

To address CVE-2019-7714, follow these mitigation strategies:

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Implement network security measures to restrict unauthorized access.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software components.
Conduct security audits and penetration testing to identify vulnerabilities.
Educate users and administrators about secure coding practices and potential threats.

Patching and Updates

Green Hills INTEGRITY RTOS users should apply the latest patches provided by the vendor to fix the vulnerability and enhance system security.