CVE-2017-12969 : Exploit Details and Defense Strategies

Avaya IP Office Contact Center versions prior to 10.1.1 are vulnerable to a buffer overflow in the ViewerCtrlLib.ViewerCtrl ActiveX control, potentially leading to denial of service attacks and arbitrary code execution.

Understanding CVE-2017-12969

This CVE describes a critical vulnerability in Avaya IP Office Contact Center versions before 10.1.1, allowing remote attackers to exploit a buffer overflow in an ActiveX control.

What is CVE-2017-12969?

The vulnerability in the ViewerCtrlLib.ViewerCtrl ActiveX control of Avaya IP Office Contact Center versions prior to 10.1.1 can be exploited by remote attackers to launch denial of service attacks and execute arbitrary code.

The Impact of CVE-2017-12969

Remote attackers can cause denial of service, leading to heap corruption and system crashes.
Attackers could potentially execute arbitrary code by sending a long string to the open method.

Technical Details of CVE-2017-12969

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The buffer overflow in the ViewerCtrlLib.ViewerCtrl ActiveX control allows remote attackers to trigger denial of service or execute arbitrary code by sending a long string to the open method.

Affected Systems and Versions

Avaya IP Office Contact Center versions prior to 10.1.1

Exploitation Mechanism

Remote attackers exploit the buffer overflow in the ActiveX control to cause denial of service or execute arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2017-12969 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Avaya IP Office Contact Center to version 10.1.1 or later.
Implement network segmentation to limit exposure.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security assessments and penetration testing.
Educate users on safe browsing habits and email security.

Patching and Updates

Avaya has released patches to address the vulnerability. Ensure timely installation of these patches to secure the system.