CVE-2017-6727 : Vulnerability Insights and Analysis

Cisco Wide Area Application Services (WAAS) has a vulnerability in its Server Message Block (SMB) protocol that could lead to a denial of service (DoS) attack.

Understanding CVE-2017-6727

This CVE identifies a specific vulnerability in Cisco WAAS that could be exploited by remote, unauthenticated attackers.

What is CVE-2017-6727?

The vulnerability in the SMB protocol of Cisco WAAS could allow attackers to trigger a DoS condition by causing affected devices to restart unexpectedly and generate Core Dump files.

The Impact of CVE-2017-6727

Exploiting this vulnerability could result in a denial of service (DoS) condition, causing affected devices to restart unexpectedly and disrupt services.

Technical Details of CVE-2017-6727

Cisco WAAS vulnerability details and affected systems.

Vulnerability Description

The vulnerability in the SMB protocol of Cisco WAAS allows unauthenticated remote attackers to create a DoS condition by causing devices to restart and generate Core Dump files.

Affected Systems and Versions

Product: Cisco Wide Area Application Services
Affected Version: 6.2(3a)

Exploitation Mechanism

Attackers can exploit this vulnerability remotely without authentication, leading to the creation of Core Dump files and unexpected device restarts.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-6727 vulnerability.

Immediate Steps to Take

Apply the available fixed releases: 6.3(0.167), 6.2(3c)5, and 6.2(3.22)
Monitor for any unusual device restarts or DoS conditions

Long-Term Security Practices

Regularly update and patch Cisco WAAS devices
Implement network segmentation and access controls to limit exposure

Patching and Updates

Ensure all Cisco WAAS devices are running the fixed releases to prevent exploitation of this vulnerability