CVE-2017-6625 : What You Need to Know

Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module have a vulnerability that could lead to a denial of service attack.

Understanding CVE-2017-6625

This CVE involves a denial of service vulnerability in the access control policy of Cisco Firepower System Software.

What is CVE-2017-6625?

The vulnerability allows a remote authenticated attacker to disrupt packet inspection and processing, causing a denial of service situation. It stems from mishandling SSL policy in the software.

The Impact of CVE-2017-6625

An attacker can stop the affected system from inspecting and processing packets, leading to a DoS scenario.
Exploiting the vulnerability involves sending manipulated packets through a specific system.

Technical Details of CVE-2017-6625

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper SSL policy handling in Cisco Firepower System Software, affecting versions 6.0.0 through 6.2.2.

Affected Systems and Versions

Cisco Firepower Threat Defense 6.0.0 through 6.2.2
Cisco ASA with FirePOWER Module

Exploitation Mechanism

Attackers exploit the vulnerability by sending crafted packets through the system.

Mitigation and Prevention

Protecting systems from CVE-2017-6625 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Monitor network traffic for signs of exploitation.
Restrict network access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch software to prevent vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.
Conduct regular security assessments and audits.

Patching and Updates

Cisco has released patches to address this vulnerability.