CVE-2020-3290 : What You Need to Know

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV Series Routers could allow an attacker to execute arbitrary code with root privileges.

Understanding CVE-2020-3290

This CVE involves a stack overflow vulnerability in Cisco Small Business RV Series Routers, potentially leading to arbitrary code execution.

What is CVE-2020-3290?

The vulnerability allows a remote attacker with administrative privileges to send crafted requests to the affected device, causing a stack overflow and potentially executing arbitrary code with root privileges.

The Impact of CVE-2020-3290

High Severity: CVSS base score of 7.2 (High Severity) due to the potential for arbitrary code execution with root privileges.
Availability Impact: High impact on availability.
Confidentiality Impact: High impact on confidentiality.
Integrity Impact: High impact on integrity.
Privileges Required: High privileges required for exploitation.

Technical Details of CVE-2020-3290

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerabilities are a result of insufficient boundary restrictions on user-supplied input to scripts in the web-based management interface of the affected routers.

Affected Systems and Versions

Product: Cisco Small Business RV Series Router Firmware
Vendor: Cisco
Versions: Not applicable (n/a)

Exploitation Mechanism

An authenticated, remote attacker with administrative privileges can exploit the vulnerabilities by sending crafted requests containing overly large values, leading to a stack overflow.

Mitigation and Prevention

Protect your systems from CVE-2020-3290 with the following steps:

Immediate Steps to Take

Apply patches and updates provided by Cisco.
Monitor Cisco's security advisories for any further updates.

Long-Term Security Practices

Regularly update and patch all network devices.
Implement strong access controls and authentication mechanisms.

Patching and Updates

Ensure timely application of security patches released by Cisco to address the vulnerabilities.