CVE-2017-6767 : Vulnerability Insights and Analysis

Cisco Application Policy Infrastructure Controller (APIC) has a vulnerability that could allow an authenticated attacker to gain higher privileges than assigned. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2017-6767

A weakness in Cisco APIC allows an authenticated attacker to obtain elevated privileges beyond their account's assignment, potentially leading to unauthorized access.

What is CVE-2017-6767?

The vulnerability in Cisco APIC enables an attacker to acquire privileges matching the most recent user's access level, regardless of the intended privilege assignment.

The Impact of CVE-2017-6767

Authenticated attackers can gain unauthorized elevated privileges on the APIC system.
The vulnerability stems from Role-Based Access Control (RBAC) limitations in granting privileges to remote authenticated users.

Technical Details of CVE-2017-6767

The technical aspects of the vulnerability are crucial to understanding its implications and potential risks.

Vulnerability Description

The flaw allows attackers to escalate their privileges beyond the intended level.
Exploitation requires successful authentication to the targeted device.

Affected Systems and Versions

Products affected: Cisco APIC
Vulnerable versions: 1.0(1e), 1.0(1h), 1.0(1k), 1.0(1n), 1.0(2j), 1.0(2m), 1.0(3f), 1.0(3i), 1.0(3k), 1.0(3n), 1.0(4h), 1.0(4o); 1.1(0.920a), 1.1(1j), 1.1(3f); 1.2 Base, 1.2(2), 1.2(3), 1.2.2; 1.3(1), 1.3(2), 1.3(2f); 2.0 Base, 2.0(1)

Exploitation Mechanism

Attackers exploit the vulnerability by authenticating to the device, adjusting their privilege level to match the last user's access.

Mitigation and Prevention

Taking immediate steps and implementing long-term security practices are essential to mitigate the risks associated with CVE-2017-6767.

Immediate Steps to Take

Monitor and restrict access to the APIC system.
Apply the latest security patches and updates from Cisco.

Long-Term Security Practices

Regularly review and update RBAC policies.
Conduct security training for users to prevent unauthorized access.

Patching and Updates

Cisco has released patches to address the vulnerability.