CVE-2012-0861 in Enterprise Virtualization Manager
Summary
by MITRE
The vds_installer in Red Hat Enterprise Virtualization Manager (RHEV-M) before 3.1, when adding a host, uses the -k curl parameter when downloading deployUtil.py and vds_bootstrap.py, which prevents SSL certificates from being validated and allows remote attackers to execute arbitrary Python code via a man-in-the-middle attack.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 12/21/2021
The vulnerability identified as CVE-2012-0861 represents a critical security flaw in Red Hat Enterprise Virtualization Manager version 3.1 and earlier releases. This issue specifically affects the vds_installer component responsible for host addition processes within the virtualization environment. The flaw manifests in the insecure handling of SSL certificate validation during the download of essential deployment utilities, creating a significant attack surface that could be exploited by malicious actors.
The technical implementation of this vulnerability stems from the use of the -k parameter with curl commands during the download process of deployUtil.py and vds_bootstrap.py scripts. This parameter explicitly disables SSL certificate verification, effectively removing the cryptographic validation that ensures secure communication between the RHEV-M server and remote hosts. The absence of certificate validation creates a man-in-the-middle attack vector where attackers can intercept and modify the downloaded Python scripts without detection, as the system accepts any certificate regardless of its authenticity or trustworthiness.
From an operational impact perspective, this vulnerability allows remote attackers to execute arbitrary Python code on target systems, potentially leading to complete system compromise and unauthorized access to the virtualization infrastructure. The attack scenario involves an attacker positioned between the RHEV-M manager and the host being added, intercepting the communication and replacing legitimate deployment scripts with malicious payloads that execute when the host installation process continues. This compromise undermines the integrity of the entire virtualization environment and could result in data breaches, service disruption, and unauthorized privilege escalation.
The vulnerability aligns with CWE-295, which addresses improper certificate validation, and maps to ATT&CK technique T1059.006 for execution through Python scripts. Organizations utilizing affected RHEV-M versions face significant risk exposure, particularly in environments where network traffic is not adequately monitored or secured. The attack requires minimal privileges and can be executed remotely, making it particularly dangerous for enterprise virtualization deployments where security controls may be insufficient.
Mitigation strategies should prioritize immediate upgrade to RHEV-M version 3.1 or later, which addresses this vulnerability through proper SSL certificate validation implementation. Organizations should also implement network segmentation and monitoring to detect suspicious communication patterns, enforce strict certificate validation policies, and conduct regular security assessments of virtualization management components. Additional protective measures include implementing network-level controls such as proxy servers with SSL inspection capabilities and establishing robust certificate management practices to ensure all communication within the virtualization environment remains secure and authenticated.