CVE-2019-7711 Explained : Impact and Mitigation

A vulnerability has been found in the TELNET server of the Interpeak IPCOMShell on Green Hills INTEGRITY RTOS 5.0.4. The "prompt" shell command allows users to define the shell's prompt value, leading to a memory address disclosure.

Understanding CVE-2019-7711

This CVE involves an information leak vulnerability in the TELNET server of the Interpeak IPCOMShell on Green Hills INTEGRITY RTOS 5.0.4.

What is CVE-2019-7711?

This CVE identifies an issue in the TELNET server of the Interpeak IPCOMShell on Green Hills INTEGRITY RTOS 5.0.4. The vulnerability arises from the undocumented shell command "prompt" that enables users to set the shell's prompt value, which is then used as input to printf, potentially exposing memory addresses.

The Impact of CVE-2019-7711

The vulnerability could allow attackers to obtain sensitive information such as memory addresses, which could be leveraged in further attacks or for reconnaissance purposes.

Technical Details of CVE-2019-7711

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue lies in the "prompt" shell command of the TELNET server, where user-defined prompt values are used as input to printf, leading to memory address disclosure.

Affected Systems and Versions

Green Hills INTEGRITY RTOS 5.0.4

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting specific input values for the "prompt" command to reveal memory addresses.

Mitigation and Prevention

To address CVE-2019-7711, follow these mitigation strategies:

Immediate Steps to Take

Disable or restrict access to the TELNET server if not essential
Implement network segmentation to limit exposure

Long-Term Security Practices

Regularly update and patch the affected systems
Conduct security assessments and audits to identify vulnerabilities

Patching and Updates

Apply patches or updates provided by Green Hills for INTEGRITY RTOS to fix the vulnerability