CVE-2022-42150 in linux-lab
Summary
by MITRE • 10/25/2023
TinyLab linux-lab v1.1-rc1 and cloud-labv0.8-rc2, v1.1-rc1 are vulnerable to insecure permissions. The default configuration could cause Container Escape.
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Analysis
by VulDB Data Team • 11/11/2023
CVE-2022-42150 affects TinyLab linux-lab and cloud-lab versions up to v1.1-rc1 and v0.8-rc2 respectively, presenting a critical security vulnerability through insecure permissions that could enable container escape attacks. This vulnerability stems from improper permission configurations within the default setup of these laboratory environments designed for testing and development purposes. The flaw allows unauthorized users to potentially gain elevated privileges and escape container boundaries, compromising the isolation that containers are meant to provide.
The technical implementation of this vulnerability involves inadequate file and directory permission settings that permit unauthorized access to critical system resources. When these laboratory environments are deployed with default configurations, they create insecure permission structures that could be exploited by malicious actors to escalate privileges and break out of containerized environments. This represents a fundamental failure in secure by default configurations that violates core container security principles and could be categorized under CWE-732 - Incorrect Permission Assignment for Critical Resource. The vulnerability specifically targets the container escape vector where attackers can leverage weak permission controls to access underlying host resources.
From an operational impact perspective, this vulnerability poses significant risks to organizations using TinyLab for security testing and development environments. Container escape attacks can lead to complete system compromise, allowing attackers to access host files, execute arbitrary code on the host system, and potentially move laterally within network environments. The default configuration issue means that any deployment without explicit security hardening could immediately be vulnerable to exploitation, creating a dangerous attack surface for threat actors. This vulnerability directly aligns with ATT&CK technique T1611 - Escape to Host, which describes methods for breaking out of containerized environments to gain access to the underlying host system.
Mitigation strategies for CVE-2022-42150 should focus on implementing proper permission controls and security hardening measures for TinyLab deployments. Organizations should immediately update to patched versions of the software if available, or manually configure secure permission settings for all container-related files and directories. Security configurations should enforce strict access controls, implement proper user and group permissions, and ensure that containerized environments are properly isolated from host resources. Additionally, regular security audits should verify that permission settings remain secure and that no unauthorized modifications have been made to the default configurations. Network segmentation and monitoring should be implemented to detect any suspicious activities that might indicate exploitation attempts, while adherence to the principle of least privilege should be enforced throughout the laboratory environment to minimize potential damage from successful attacks.