CVE-2021-20136 Explained : Impact and Mitigation
Understand the security risk posed by CVE-2021-20136 affecting ManageEngine Log360 < 5235. Learn how an attacker can exploit the vulnerability and steps to prevent it.
ManageEngine Log360 Builds < 5235 are affected by an improper access control vulnerability that allows an unauthenticated remote attacker to change the database configuration. This could lead to the execution of remote code by manipulating files executed during Log360 startup.
Understanding CVE-2021-20136
This CVE identifies an improper access control vulnerability in ManageEngine Log360.
What is CVE-2021-20136?
CVE-2021-20136 pertains to an improper access control issue in ManageEngine Log360 Builds < 5235, enabling unauthenticated remote attackers to modify the backend database and trigger Log360 to restart, potentially leading to remote code execution.
The Impact of CVE-2021-20136
The vulnerability poses a significant risk as it allows attackers to compromise the integrity of the Log360 system and potentially execute malicious code remotely.
Technical Details of CVE-2021-20136
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability in ManageEngine Log360 versions < 5235 permits unauthorized remote modification of database settings, opening the door to potential remote code execution scenarios.
Affected Systems and Versions
ManageEngine Log360 Builds < 5235 are confirmed to be susceptible to this vulnerability.
Exploitation Mechanism
An unauthenticated attacker can exploit this flaw by sending a specially crafted message to Log360, directing it to change its backend database to a controlled database. This manipulation can force Log360 to reboot, potentially enabling remote code execution by replacing files executed during startup.
Mitigation and Prevention
Below are recommended steps to mitigate and prevent exploitation of CVE-2021-20136.
Immediate Steps to Take
- Update ManageEngine Log360 to a version greater than or equal to 5235 to eliminate this vulnerability.
- Implement proper network segmentation and access controls to restrict unauthorized access to Log360.
Long-Term Security Practices
- Regularly monitor security advisories from ManageEngine and apply patches promptly.
- Conduct periodic security assessments and audits to identify and address vulnerabilities proactively.
Patching and Updates
Ensure timely installation of security patches provided by ManageEngine to protect Log360 from known vulnerabilities and security risks.