CVE-2021-1251 Explained : Impact and Mitigation
Discover multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers through CVE-2021-1251. Learn about the impact, affected systems, and necessary mitigation steps.
Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers, potentially allowing an attacker to execute arbitrary code or trigger denial of service (DoS) conditions. This CVE was published on April 7, 2021.
Understanding CVE-2021-1251
This section provides insights into the nature and impact of the identified vulnerabilities.
What is CVE-2021-1251?
CVE-2021-1251 highlights multiple vulnerabilities in the LLDP implementation for Cisco Small Business RV Series Routers, enabling adjacent attackers to execute code, leak system memory, or cause device reloads. These could result in DoS conditions.
The Impact of CVE-2021-1251
The vulnerabilities within CVE-2021-1251 can lead to severe consequences, allowing unauthorized code execution or disruptions in device functionality when exploited by attackers.
Technical Details of CVE-2021-1251
Explore the specific technical aspects related to CVE-2021-1251.
Vulnerability Description
The vulnerabilities in the LLDP implementation of Cisco routers pose a significant risk as they can be leveraged by unauthenticated attackers in the same broadcast domain to compromise affected devices.
Affected Systems and Versions
The affected product is the Cisco Small Business RV Series Router Firmware. All versions are susceptible to these LLDP-related vulnerabilities.
Exploitation Mechanism
To exploit CVE-2021-1251, attackers must be in the same broadcast domain as the targeted device, requiring proximity to execute the associated risks.
Mitigation and Prevention
Learn about the necessary steps to mitigate the risks posed by CVE-2021-1251.
Immediate Steps to Take
Ensure network security by applying immediate measures to prevent unauthorized access and potential exploits related to LLDP vulnerabilities.
Long-Term Security Practices
Establish comprehensive security protocols and monitoring routines to safeguard against similar vulnerabilities in the future.
Patching and Updates
Stay informed about security updates and patches provided by Cisco to address and eliminate the vulnerabilities associated with CVE-2021-1251.