CVE-2020-1742 : Vulnerability Insights and Analysis
Learn about CVE-2020-1742, a security flaw in nmstate/kubernetes-nmstate-handler containers allowing unauthorized privilege escalation through /etc/passwd modification. Discover mitigation steps and updates.
An insecure modification vulnerability in containers using nmstate/kubernetes-nmstate-handler allows attackers to escalate privileges by modifying /etc/passwd.
Understanding CVE-2020-1742
What is CVE-2020-1742?
CVE-2020-1742 is a security vulnerability found in the nmstate/kubernetes-nmstate-handler container, enabling unauthorized privilege escalation through /etc/passwd modification.
The Impact of CVE-2020-1742
The vulnerability allows attackers to escalate their privileges by making unauthorized modifications to the /etc/passwd file within the affected container.
Technical Details of CVE-2020-1742
Vulnerability Description
An insecure modification flaw in nmstate/kubernetes-nmstate-handler permits unauthorized changes to /etc/passwd, potentially leading to privilege escalation.
Affected Systems and Versions
- Product: nmstate/kubernetes-nmstate-handler
- Version: kubernetes-nmstate-handler-container-v2.3.0-30 and earlier
Exploitation Mechanism
Attackers with container access can exploit the vulnerability to modify the /etc/passwd file, thereby escalating their privileges.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to version kubernetes-nmstate-handler-container-v2.3.0-30 or newer
- Implement container security best practices
Long-Term Security Practices
- Regular security assessments of containers
- Monitor and restrict container access
Patching and Updates
Apply patches and updates promptly to mitigate the vulnerability.