CVE-2017-12230 : What You Need to Know

A vulnerability in the web-based user interface (web UI) of Cisco IOS XE 16.2 allows an authenticated attacker to elevate their privileges on an affected device.

Understanding CVE-2017-12230

This CVE involves a flaw in the web UI of Cisco IOS XE 16.2 that enables a remote attacker with authenticated access to increase their privileges on the impacted device.

What is CVE-2017-12230?

The vulnerability arises from incorrect permission settings for newly created users through the web UI, allowing attackers to elevate their privileges by creating a new user and logging in with those credentials.

The Impact of CVE-2017-12230

Attackers can exploit this vulnerability to escalate their privileges on Cisco devices running susceptible versions of Cisco IOS XE Software with the HTTP Server feature enabled.
The vulnerability affects devices with the updated web-based administration UI introduced in the Denali 16.2 Release.

Technical Details of CVE-2017-12230

This section provides more technical insights into the vulnerability.

Vulnerability Description

The flaw allows attackers to increase their privileges on affected devices.

Affected Systems and Versions

Product: Cisco IOS XE
Version: Cisco IOS XE

Exploitation Mechanism

Attackers utilize the web UI to create a new user and log in to elevate their privileges.

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2017-12230.

Immediate Steps to Take

Disable the HTTP Server feature if not required.
Monitor Cisco's security advisories for patches and updates.

Long-Term Security Practices

Regularly review and adjust user permissions.
Implement network segmentation to limit the impact of potential breaches.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Apply patches provided by Cisco to address the vulnerability.