CVE-2018-11767 : Vulnerability Insights and Analysis
Learn about CVE-2018-11767 affecting Apache Hadoop versions 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, and 2.7.5 to 2.7.6. Understand the impact, technical details, and mitigation steps for this privilege escalation vulnerability.
Apache Hadoop versions 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, and 2.7.5 to 2.7.6 are affected by a privilege escalation vulnerability related to Key Management Service (KMS).
Understanding CVE-2018-11767
This CVE involves incorrect access control by KMS in specific versions of Apache Hadoop.
What is CVE-2018-11767?
In Apache Hadoop versions 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, and 2.7.5 to 2.7.6, there is a vulnerability where KMS may incorrectly block or grant access to users when non-default groups mapping mechanisms are used.
The Impact of CVE-2018-11767
This vulnerability could allow unauthorized users to gain access to sensitive data or resources within the affected Apache Hadoop systems.
Technical Details of CVE-2018-11767
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The issue arises from KMS incorrectly handling access control when non-default groups mapping mechanisms are utilized in Apache Hadoop versions 2.9.0 to 2.9.1, 2.8.3 to 2.8.4, and 2.7.5 to 2.7.6.
Affected Systems and Versions
- Apache Hadoop 2.9.0 to 2.9.1
- Apache Hadoop 2.8.3 to 2.8.4
- Apache Hadoop 2.7.5 to 2.7.6
Exploitation Mechanism
The vulnerability can be exploited by malicious actors who can manipulate the access control mechanisms in KMS to gain unauthorized access.
Mitigation and Prevention
Protecting systems from CVE-2018-11767 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by Apache Hadoop to address the vulnerability.
- Review and adjust access control configurations to mitigate the risk of unauthorized access.
Long-Term Security Practices
- Regularly update and patch Apache Hadoop to ensure the latest security fixes are in place.
- Implement strong access control policies and regularly audit user permissions to prevent privilege escalation.
Patching and Updates
Ensure that all Apache Hadoop instances are updated with the latest patches and security updates to prevent exploitation of this vulnerability.