CVE-2019-10153 : Security Advisory and Response
Discover the impact of CVE-2019-10153 in fence-agents versions earlier than 4.3.4. Learn about the vulnerability, affected systems, and mitigation steps to secure your cluster environments.
A vulnerability in fence-agents versions earlier than 4.3.4 could lead to service disruption in cluster environments due to the mishandling of non-ASCII characters.
Understanding CVE-2019-10153
In fence-agents versions prior to 4.3.4, a specific flaw could cause fence_rhevm to terminate unexpectedly when non-ASCII characters were used in a guest VM's comments or other fields. This issue has a CVSS base score of 5.0, indicating a medium severity vulnerability.
What is CVE-2019-10153?
The vulnerability in fence-agents versions before 4.3.4 could result in the premature termination of fence_rhevm when non-ASCII characters were present in certain fields of a guest VM, potentially disrupting automated recovery processes or services in affected clusters.
The Impact of CVE-2019-10153
The presence of non-ASCII characters in specific fields of a guest VM could trigger fence_rhevm to exit unexpectedly, potentially hindering automated recovery processes and disrupting services within affected clusters.
Technical Details of CVE-2019-10153
In-depth technical information about the vulnerability.
Vulnerability Description
The flaw in fence-agents versions earlier than 4.3.4 allowed non-ASCII characters in guest VM fields, causing fence_rhevm to terminate unexpectedly, impacting cluster services.
Affected Systems and Versions
- Product: fence-agents
- Vendor: ClusterLabs
- Versions affected: Versions earlier than 4.3.4
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- Scope: Changed
- User Interaction: None
Mitigation and Prevention
Actions to mitigate and prevent the vulnerability.
Immediate Steps to Take
- Update fence-agents to version 4.3.4 or later to address the vulnerability.
- Avoid using non-ASCII characters in guest VM fields until the system is patched.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Conduct security assessments to identify and address vulnerabilities proactively.
Patching and Updates
Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.