CVE-2023-20073 : Security Advisory and Response

This CVE record highlights a vulnerability identified as the "Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Arbitrary File Upload Vulnerability" affecting Cisco Small Business RV Series Router Firmware.

Understanding CVE-2023-20073

This section delves into the nature of the CVE-2023-20073 vulnerability and its implications.

What is CVE-2023-20073?

CVE-2023-20073 is a vulnerability found in the web-based management interface of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers. It enables an unauthenticated remote attacker to upload arbitrary files to a vulnerable device due to insufficient authorization enforcement mechanisms in the context of file uploads.

The Impact of CVE-2023-20073

If exploited by a malicious actor, this vulnerability could allow unauthorized parties to upload arbitrary files to the affected devices, potentially leading to further compromise of the system's integrity and confidentiality.

Technical Details of CVE-2023-20073

This section provides a deeper insight into the technical aspects of CVE-2023-20073.

Vulnerability Description

The vulnerability arises from inadequate authorization checks related to file uploads in the web-based management interface of the Cisco RV series routers, creating an avenue for attackers to upload unauthorized files.

Affected Systems and Versions

The vulnerability affects Cisco Small Business RV Series Router Firmware, with the specific version tagged as "n/a."

Exploitation Mechanism

An attacker could exploit this vulnerability by crafting a specific HTTP request and sending it to a vulnerable device, thus bypassing proper authorization and uploading malicious files.

Mitigation and Prevention

Understanding how to mitigate and prevent CVE-2023-20073 is essential to enhance system security.

Immediate Steps to Take

Cisco recommends updating the affected devices to the latest firmware version provided by the vendor.
Implement proper network security controls and restrict access to vulnerable devices.

Long-Term Security Practices

Regularly monitor for security advisories and patches from Cisco.
Conduct routine security assessments to identify vulnerabilities proactively.

Patching and Updates

Apply patches and updates from Cisco promptly to address the CVE-2023-20073 vulnerability and enhance system security.