CVE-2020-3437 : Vulnerability Insights and Analysis

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying filesystem of the device.

Understanding CVE-2020-3437

This CVE involves a security vulnerability in Cisco SD-WAN vManage Software that could potentially lead to information disclosure.

What is CVE-2020-3437?

The vulnerability in Cisco SD-WAN vManage Software allows a remote attacker to access and read arbitrary files on the device's filesystem through the web-based management interface.

The Impact of CVE-2020-3437

The exploitation of this vulnerability could result in unauthorized access to sensitive information stored on the device's filesystem, potentially leading to data leakage and compromise.

Technical Details of CVE-2020-3437

This section provides more in-depth technical details about the vulnerability.

Vulnerability Description

The vulnerability is caused by insufficient file scope limiting, enabling attackers to create a specific file reference on the filesystem and access it via the web-based management interface.

Affected Systems and Versions

Product: Cisco SD-WAN vManage
Vendor: Cisco
Affected Version: n/a

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Confidentiality Impact: High
Integrity Impact: None
Availability Impact: None
Vector String: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score: 6.5 (Medium Severity)
Scope: Unchanged

Mitigation and Prevention

Protecting systems from CVE-2020-3437 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor network traffic for any suspicious activity.
Restrict access to the web-based management interface.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security assessments and penetration testing.
Implement network segmentation to limit the impact of potential breaches.

Patching and Updates

Regularly check for security advisories and updates from Cisco to address vulnerabilities like CVE-2020-3437.