CVE-2021-38363 : Security Advisory and Response
Learn about CVE-2021-38363, a vulnerability in ONOS 2.5.1's IntentManager where a specific intent causing an exception remains in memory indefinitely, impacting system operations.
An issue was discovered in ONOS 2.5.1 where the install-requested intent remains in memory forever, causing an exception in the IntentManager.
Understanding CVE-2021-38363
This CVE-2021-38363 affects ONOS 2.5.1, specifically in the IntentManager component where a specific intent causing an exception is not removed from memory.
What is CVE-2021-38363?
CVE-2021-38363 is a vulnerability that allows an install-requested intent to remain in the pendingMap of IntentManager indefinitely, leading to potential memory leaks and denial of service.
The Impact of CVE-2021-38363
The impact of this vulnerability is significant as it can result in memory bloat and denial of service, affecting the normal operations of the ONOS 2.5.1 platform.
Technical Details of CVE-2021-38363
In this section, we will delve into the specific technical aspects of CVE-2021-38363.
Vulnerability Description
The vulnerability allows a specific intent to cause an exception, leading to memory bloat and denial of service by persisting in the pendingMap of IntentManager.
Affected Systems and Versions
ONOS 2.5.1 is the only known affected version by this vulnerability as it impacts the IntentManager component of the system.
Exploitation Mechanism
Exploiting this vulnerability involves triggering the installation of a particular intent that results in an exception and remains in memory indefinitely.
Mitigation and Prevention
To protect systems from CVE-2021-38363, certain mitigation and prevention strategies need to be implemented.
Immediate Steps to Take
Immediate steps include monitoring memory usage, applying vendor patches if available, and limiting intent installations that may trigger exceptions.
Long-Term Security Practices
Implementing secure coding practices, regular vulnerability scans, and following best practices in memory management can help prevent similar vulnerabilities.
Patching and Updates
Patching is crucial to address CVE-2021-38363. Ensure that the affected ONOS 2.5.1 instances are updated with the latest patches and fixes to mitigate this vulnerability.