CVE-2021-1308 : Security Advisory and Response
Learn about CVE-2021-1308 impacting Cisco Small Business RV Series Routers with critical LLDP vulnerabilities allowing execution of arbitrary code and denial of service attacks.
Cisco Small Business RV Series Routers are impacted by multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation, potentially allowing an unauthenticated adjacent attacker to execute arbitrary code, leak system memory, or cause a denial of service (DoS) condition.
Understanding CVE-2021-1308
This CVE identifies critical vulnerabilities affecting Cisco Small Business RV Series Routers due to issues in the LLDP feature.
What is CVE-2021-1308?
CVE-2021-1308 highlights the presence of multiple vulnerabilities in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An attacker within the same broadcast domain can exploit these flaws.
The Impact of CVE-2021-1308
The vulnerabilities could allow an adjacent attacker to execute arbitrary code, trigger memory leaks, reload devices, and lead to denial of service conditions on affected routers.
Technical Details of CVE-2021-1308
Critical technical information surrounding CVE-2021-1308.
Vulnerability Description
The flaws in LLDP can enable an unauthenticated attacker in the same broadcast domain to execute arbitrary code or disrupt device functionality.
Affected Systems and Versions
Cisco Small Business RV Series Routers running the impacted LLDP implementation are at risk.
Exploitation Mechanism
To exploit CVE-2021-1308, an attacker must be within the same broadcast domain, requiring no authentication.
Mitigation and Prevention
Essential steps to address and prevent the exploitation of CVE-2021-1308.
Immediate Steps to Take
Cisco users should apply relevant patches or security updates promptly to mitigate the risks associated with these vulnerabilities.
Long-Term Security Practices
Employ network segmentation, access controls, and regular security assessments to enhance overall network security.
Patching and Updates
Regularly monitor vendor advisories for patches related to LLDP vulnerabilities in Cisco Small Business RV Series Routers.