CVE-2019-7713 : Security Advisory and Response

A vulnerability has been found in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4, leading to a buffer overflow issue and potential memory corruption.

Understanding CVE-2019-7713

This CVE involves a heap-based buffer overflow in the TELNET server's shell prompt function, triggered by the use of custom modifiers to display specific information.

What is CVE-2019-7713?

The vulnerability in the Interpeak IPCOMShell TELNET server on Green Hills INTEGRITY RTOS 5.0.4 arises from a buffer overflow in the shell prompt function when custom modifiers are used to show details like process ID, IP address, or current working directory.

The Impact of CVE-2019-7713

The exploitation of this vulnerability can result in memory corruption, system crashes, and potential leakage of memory address information, posing a significant security risk.

Technical Details of CVE-2019-7713

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The issue involves a heap-based buffer overflow in the function responsible for printing the shell prompt, triggered by the use of custom modifiers to display specific information.

Affected Systems and Versions

Green Hills INTEGRITY RTOS 5.0.4

Exploitation Mechanism

The buffer overflow occurs when modifier expansion is used to display additional details, leading to memory corruption, system crashes, and potential memory address leakage.

Mitigation and Prevention

To address CVE-2019-7713, follow these mitigation strategies:

Immediate Steps to Take

Apply vendor-supplied patches or updates promptly.
Implement network segmentation to limit exposure.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for staff to recognize and respond to potential threats.

Patching and Updates

Green Hills INTEGRITY RTOS users should apply the latest patches provided by the vendor to mitigate the vulnerability.