CVE-2019-1867 : Vulnerability Insights and Analysis

Cisco Elastic Services Controller REST API Authentication Bypass Vulnerability

Understanding CVE-2019-1867

This CVE involves a vulnerability in the REST API of Cisco Elastic Services Controller (ESC) that could allow a remote attacker to bypass authentication on the REST API.

What is CVE-2019-1867?

The weakness in the REST API of Cisco ESC enables an unauthenticated attacker to circumvent authentication, potentially leading to unauthorized actions with administrative privileges.

The Impact of CVE-2019-1867

The vulnerability has a CVSS base score of 10.0 (Critical severity) due to its high impact on confidentiality, integrity, and availability. An attacker could exploit this flaw to execute unrestricted actions on affected systems.

Technical Details of CVE-2019-1867

The following technical details provide insight into the vulnerability:

Vulnerability Description

The vulnerability stems from inadequate validation of API requests, allowing attackers to send modified requests to the REST API.

Affected Systems and Versions

Product: Cisco Elastic Services Controller
Versions Affected:
Less than 4.1.0.100
Less than 4.2.0.74
Less than 4.3.0.121
Less than 4.4.0.80

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2019-1867:

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor network traffic for signs of exploitation.

Long-Term Security Practices

Implement strong authentication mechanisms.
Regularly review and update access controls.

Patching and Updates

Cisco has released patches to address this vulnerability. Ensure systems are updated to versions that mitigate the issue.