CVE-2020-3365 : What You Need to Know

A vulnerability in the directory permissions of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, remote attacker to perform a directory traversal attack on a limited set of restricted directories. The flaw in the logic governing directory permissions enables an attacker to overwrite files on affected devices.

Understanding CVE-2020-3365

This CVE involves a path traversal vulnerability in Cisco Enterprise NFV Infrastructure Software.

What is CVE-2020-3365?

The vulnerability allows an authenticated remote attacker to conduct a directory traversal attack on specific directories due to flawed directory permission logic.

The Impact of CVE-2020-3365

The vulnerability could lead to unauthorized file overwriting on affected devices, potentially compromising data integrity.

Technical Details of CVE-2020-3365

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in the directory permissions of Cisco NFVIS permits attackers to traverse directories and overwrite files, bypassing role-based access control mechanisms.

Affected Systems and Versions

Product: Cisco Enterprise NFV Infrastructure Software
Vendor: Cisco
Affected Version: Not applicable

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Base Score: 4.3 (Medium Severity)
Integrity Impact: Low
Privileges Required: Low
User Interaction: None
Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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

Implement least privilege access controls.
Regularly update and patch software to mitigate future vulnerabilities.

Patching and Updates

Regularly check for security advisories and apply patches as soon as they are released.