CVE-2021-36311 Explained : Impact and Mitigation
Learn about CVE-2021-36311, an Improper Authorization vulnerability in Dell EMC Networker versions prior to 19.5 allowing local malicious users to upload and execute unauthorized files.
Dell EMC Networker versions prior to 19.5 contain an Improper Authorization vulnerability that allows a local malicious user with networker user privileges to upload and execute malicious files.
Understanding CVE-2021-36311
This section will cover the details about the vulnerability, its impact, technical description, affected systems, exploitation mechanism, and mitigation steps.
What is CVE-2021-36311?
CVE-2021-36311 is an Improper Authorization vulnerability found in Dell EMC Networker versions less than 19.5. This vulnerability can be exploited by a local malicious user to upload and execute unauthorized files.
The Impact of CVE-2021-36311
The vulnerability poses a medium severity risk with a CVSS base score of 6. It allows attackers with high privileges to execute arbitrary code by uploading malicious files.
Technical Details of CVE-2021-36311
Below are the technical details regarding this CVE.
Vulnerability Description
The vulnerability lies in Dell EMC Networker versions before 19.5, enabling unauthorized file uploads by local malicious users with networker user privileges.
Affected Systems and Versions
Dell EMC Networker versions < 19.5 are affected by this vulnerability, potentially allowing exploitation by attackers with user privileges.
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading malicious files to unauthorized locations, subsequently executing them with the networker user's privileges.
Mitigation and Prevention
Here are some crucial steps to mitigate the risks posed by CVE-2021-36311.
Immediate Steps to Take
Immediate actions include restricting user privileges, monitoring file uploads, and applying security patches promptly.
Long-Term Security Practices
Implementing the principle of least privilege, conducting regular security audits, and educating users on safe file handling are recommended long-term practices.
Patching and Updates
Ensure all systems are updated to Dell EMC Networker version 19.5 or above to mitigate the vulnerability and prevent potential exploitation.