CVE-2017-6779 : Exploit Details and Defense Strategies

A vulnerability has been identified in certain Cisco collaboration products that affects the local file management of system log files, potentially leading to a denial of service (DoS) condition by consuming disk space.

Understanding CVE-2017-6779

This CVE involves a vulnerability in Cisco collaboration products that could be exploited by an unauthorized individual to cause a DoS condition.

What is CVE-2017-6779?

The vulnerability allows an attacker to manipulate system log files, consuming disk space and destabilizing the affected device.

The Impact of CVE-2017-6779

Unauthorized individuals can cause a DoS condition by consuming disk space on the affected device.
Attackers can manipulate system log files, leading to abnormal device functioning.

Technical Details of CVE-2017-6779

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Lack of size limit on a specific system log file allows it to occupy a large portion of disk space.
Attackers can increase the size of the log file by sending manipulated remote connection requests.

Affected Systems and Versions

Various Cisco Voice Operating System (VOS)-based products are impacted, including Emergency Responder, Unified Communications Manager, and Unity Connection.

Exploitation Mechanism

Attackers exploit the vulnerability by sending crafted remote connection requests to increase the log file size.

Mitigation and Prevention

Steps to address and prevent the CVE-2017-6779 vulnerability.

Immediate Steps to Take

Apply patches provided by Cisco to mitigate the vulnerability.
Monitor disk space utilization on affected devices.

Long-Term Security Practices

Regularly update and patch Cisco collaboration products.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Cisco and apply patches promptly.