CVE-2017-12268 : Security Advisory and Response

Cisco AnyConnect Network Access Manager contains a vulnerability that could allow a local attacker to manipulate network adapters, enabling unauthorized network interfaces.

Understanding CVE-2017-12268

The Network Access Manager (NAM) of Cisco AnyConnect Secure Mobility Client has a security weakness that permits a local attacker to enable multiple network adapters.

What is CVE-2017-12268?

The vulnerability, known as a Dual-Homed Interface vulnerability, results from inadequate enforcement of NAM policies. An attacker could exploit this weakness to enable multiple active network interfaces and transmit traffic over unauthorized interfaces.

The Impact of CVE-2017-12268

A local attacker could manipulate network interfaces to enable unauthorized network access.
Successful exploitation could lead to unauthorized transmission of traffic over non-authorized interfaces.

Technical Details of CVE-2017-12268

The following technical details provide insight into the vulnerability:

Vulnerability Description

The vulnerability in Cisco AnyConnect NAM allows attackers to enable multiple network adapters due to insufficient policy enforcement.

Affected Systems and Versions

Product: Cisco AnyConnect Network Access Manager
Version: Cisco AnyConnect Network Access Manager

Exploitation Mechanism

Attackers exploit this vulnerability by manipulating network interfaces to enable multiple active network interfaces.

Mitigation and Prevention

To address CVE-2017-12268, consider the following steps:

Immediate Steps to Take

Apply patches provided by Cisco to fix the vulnerability.
Monitor network traffic for any unauthorized activities.
Restrict network access to authorized personnel only.

Long-Term Security Practices

Regularly update and patch all software and systems.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Stay informed about security advisories from Cisco.
Apply security updates promptly to mitigate risks.