CVE-2021-1320 : What You Need to Know
Learn about CVE-2021-1320, a security advisory impacting Cisco Small Business RV Series Routers. Understand the vulnerabilities, impact, and mitigation strategies.
Cisco Small Business RV Series Routers Management Interface Remote Command Execution and Denial of Service Vulnerabilities were published on February 3, 2021. This CVE highlights multiple vulnerabilities in the web-based management interface of Cisco Small Business RV Series Routers affecting various models.
Understanding CVE-2021-1320
This section delves into the details of the CVE-2021-1320, explaining its impact, technical aspects, and mitigation strategies.
What is CVE-2021-1320?
The vulnerability in the web-based management interface of Cisco Small Business RV Series Routers allows an authenticated attacker to execute arbitrary code or cause a device to restart unexpectedly. This results from improper validation of user input.
The Impact of CVE-2021-1320
Exploiting these vulnerabilities could allow an attacker to execute arbitrary code as the root user or trigger a denial of service condition, requiring valid administrator credentials on the affected device.
Technical Details of CVE-2021-1320
This section details the technical aspects of the CVE, including vulnerability description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerabilities stem from inadequate validation of user-supplied input in the web-based management interface, enabling attackers to send crafted HTTP requests to execute code or cause a device reload.
Affected Systems and Versions
Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and RV325 Routers are impacted by these vulnerabilities.
Exploitation Mechanism
Attackers can exploit these vulnerabilities by crafting HTTP requests, requiring valid administrator credentials on the target device.
Mitigation and Prevention
In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2021-1320.
Immediate Steps to Take
Users should ensure that web-based management interfaces are not directly exposed to the internet, monitor for any unusual activities, and apply vendor patches promptly.
Long-Term Security Practices
To enhance security posture, organizations should implement network segmentation, regularly update router firmware, conduct security assessments, and enforce the principle of least privilege.
Patching and Updates
Cisco has released patches to address these vulnerabilities. It is crucial for users to apply the latest firmware updates provided by the vendor to secure their devices against potential attacks.