CVE-2021-28488 : Security Advisory and Response
Learn about CVE-2021-28488 impacting Ericsson Network Manager, allowing users to access restricted network data. Find mitigation steps and best practices for enhanced security.
This CVE-2021-28488 affects Ericsson Network Manager (ENM) before version 21.2 due to incorrect access control behavior. It allows users in the same AMOS authorization group to access managed-network data not meant for their entire group.
Understanding CVE-2021-28488
This CVE impacts the access control mechanism in Ericsson Network Manager, potentially leading to unauthorized access to sensitive network data.
What is CVE-2021-28488?
The vulnerability in Ericsson Network Manager (ENM) enables users within the same AMOS group to retrieve managed-network data that should be restricted to a subset, rather than the entire group.
The Impact of CVE-2021-28488
This vulnerability can result in unauthorized users accessing sensitive network data, potentially leading to data breaches or unauthorized network configuration changes.
Technical Details of CVE-2021-28488
The vulnerability arises from the incorrect access control implementation in ENM before version 21.2, allowing users in the same authorization group to access restricted network data.
Vulnerability Description
The flaw in ENM's access control mechanism permits users in the same AMOS group to retrieve network data not authorized for their subset.
Affected Systems and Versions
All versions of Ericsson Network Manager before 21.2 are affected by this vulnerability.
Exploitation Mechanism
Attackers with access to the same AMOS group as the target can exploit this flaw to access sensitive network data.
Mitigation and Prevention
To address CVE-2021-28488, immediate steps and long-term security practices are necessary.
Immediate Steps to Take
Implement strict access controls, monitor network activity for unusual behavior, and restrict access to sensitive data.
Long-Term Security Practices
Regularly update ENM to the latest version, conduct security training for users, and perform regular security assessments.
Patching and Updates
Apply all security patches and updates released by Ericsson for Network Manager to mitigate the vulnerability.