CVE-2020-3288 : Security Advisory and Response

Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities

Understanding CVE-2020-3288

This CVE involves multiple vulnerabilities in the web-based management interface of Cisco Small Business RV Series Routers, potentially allowing remote attackers to execute arbitrary code.

What is CVE-2020-3288?

The vulnerabilities in the routers' management interface could be exploited by authenticated remote attackers with administrative privileges to execute arbitrary code on the affected devices.

The Impact of CVE-2020-3288

The vulnerabilities could lead to a stack overflow by sending crafted requests with overly large values, potentially causing the device to crash or enabling the execution of arbitrary code with root privileges on the operating system.

Technical Details of CVE-2020-3288

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerabilities stem from 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

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
User Interaction: None
Impact: High
Vector String: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Mitigation and Prevention

Steps to address and prevent the vulnerabilities.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Restrict network access to the management interface.
Monitor for any unauthorized access or unusual activities.

Long-Term Security Practices

Regularly update firmware and security patches.
Implement strong password policies and multi-factor authentication.
Conduct security assessments and penetration testing.

Patching and Updates

Refer to the vendor's security advisory for patch availability and installation instructions.