CVE-2021-1520 : What You Need to Know
Know about CVE-2021-1520 affecting Cisco RV340, RV340W, RV345, and RV345P routers. Learn the impact, technical details, and mitigation steps for this critical vulnerability.
A vulnerability in the internal message processing of Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, local attacker to run arbitrary commands with root privileges on the underlying operating system (OS). This article provides an overview of CVE-2021-1520, its impact, technical details, and mitigation steps.
Understanding CVE-2021-1520
This section delves into the details of the vulnerability affecting Cisco RV Series routers.
What is CVE-2021-1520?
The vulnerability in Cisco RV Series routers enables local attackers to execute arbitrary commands with root privileges, posing a high-risk threat to system integrity and confidentiality.
The Impact of CVE-2021-1520
The impact of CVE-2021-1520 is significant, allowing attackers to compromise system security by gaining root access and running malicious commands.
Technical Details of CVE-2021-1520
Explore the technical aspects of the vulnerability in this section.
Vulnerability Description
The flaw arises from inadequate input sanitization in the internal messaging service, permitting attackers to exploit the device post-authentication.
Affected Systems and Versions
The affected products include Cisco Small Business RV Series Router Firmware, with all versions being vulnerable.
Exploitation Mechanism
Successful exploitation involves authenticating to the device and sending a crafted request to the internal service, granting the attacker root privileges on the OS.
Mitigation and Prevention
Discover the essential steps to mitigate the risks posed by CVE-2021-1520.
Immediate Steps to Take
To safeguard against this vulnerability, it is crucial to ensure that device Administrator credentials are secure and not easily compromised.
Long-Term Security Practices
Implementing strong access controls, regular security audits, and monitoring for suspicious activity can enhance overall system security.
Patching and Updates
Cisco may release patches or updates to address CVE-2021-1520, which should be promptly applied to mitigate the risk of exploitation.