CVE-2019-1820 : What You Need to Know

Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnerability

Understanding CVE-2019-1820

This CVE involves a security flaw in the web-based management interface of Cisco Prime Infrastructure and Cisco Evolved Programmable Network (EPN) Manager software.

What is CVE-2019-1820?

The vulnerability allows an authenticated attacker to access and open restricted files within the application by exploiting inadequate cleaning of user-provided input in HTTP request parameters.

The Impact of CVE-2019-1820

If successfully exploited, the attacker can view sensitive data contained in application files, posing a risk to confidentiality.

Technical Details of CVE-2019-1820

The following are technical details of the vulnerability:

Vulnerability Description

The flaw arises from improper sanitization of user-supplied input in HTTP request parameters describing file names, enabling directory traversal techniques for unauthorized access.

Affected Systems and Versions

Product: Cisco Prime Infrastructure
Vendor: Cisco
Version: 3.4

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Confidentiality Impact: High
Integrity Impact: None
Availability Impact: None

Mitigation and Prevention

Steps to address and prevent the vulnerability:

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch software to mitigate future vulnerabilities.
Implement access controls and user permissions to restrict file access.

Patching and Updates

Stay informed about security advisories from Cisco.
Regularly check for software updates and apply them as soon as they are available.