CVE-2021-1293 : Security Advisory and Response

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as the root user on an affected device. The vulnerabilities exist due to improper validation of HTTP requests.

Understanding CVE-2021-1293

This CVE relates to remote code execution vulnerabilities in specific Cisco Small Business RV Series Router Firmware versions.

What is CVE-2021-1293?

The CVE-2021-1293 concerns multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers that could enable a remote attacker to execute arbitrary code on the affected device.

The Impact of CVE-2021-1293

These vulnerabilities have a CVSS base score of 9.8 (Critical) with high impacts on confidentiality, integrity, and availability. An attacker could exploit these issues to gain unauthorized access and control over the device remotely.

Technical Details of CVE-2021-1293

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The vulnerabilities allow an unauthenticated, remote attacker to execute arbitrary code as the root user by sending crafted HTTP requests to the device's web-based management interface.

Affected Systems and Versions

The affected products include Cisco Small Business RV Series Router Firmware with versions marked as 'n/a'.

Exploitation Mechanism

By exploiting the lack of proper validation in HTTP requests, an attacker can send specially crafted requests to achieve remote code execution on vulnerable devices.

Mitigation and Prevention

To secure your systems from CVE-2021-1293, consider the following mitigation steps.

Immediate Steps to Take

Cisco recommends updating the firmware to the latest patched version to eliminate the vulnerability.
Restrict network access to the web-based management interface of the affected devices.

Long-Term Security Practices

Regularly monitor Cisco’s security advisories for any updates pertaining to your device.
Implement network segmentation and access controls to limit exposure to potential threats.

Patching and Updates

Apply patches and updates provided by Cisco for the affected router models to address the vulnerability and enhance device security.