CVE-2014-3485 in Enterprise Virtualization
Summary
by MITRE
The REST API in the ovirt-engine in oVirt, as used in Red Hat Enterprise Virtualization (rhevm) 3.4, allows remote authenticated users to read arbitrary files and have other unspecified impact via unknown vectors, related to an XML External Entity (XXE) issue.
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Analysis
by VulDB Data Team • 03/24/2022
The vulnerability identified as CVE-2014-3485 represents a critical security flaw within the REST API component of oVirt-engine, which serves as the core management platform for Red Hat Enterprise Virtualization version 3.4. This issue stems from an XML External Entity processing vulnerability that affects the engine's ability to handle malformed XML input through its web-based interface. The vulnerability specifically impacts the ovirt-engine's REST API implementation, which is responsible for managing virtual machine operations, storage configurations, and other critical infrastructure components. Attackers exploiting this weakness can leverage XML parsing mechanisms to access unauthorized resources and potentially gain deeper system access.
The technical implementation of this vulnerability resides in the XML processing layer of the REST API, where the system fails to properly validate and sanitize external entity references in incoming XML requests. This flaw allows authenticated users to craft malicious XML payloads that reference external resources or local files on the server hosting the ovirt-engine. The XXE vulnerability specifically enables attackers to perform file disclosure attacks, potentially accessing sensitive configuration files, credential stores, or other system resources that should remain protected from unauthorized access. The unspecified nature of the additional impacts suggests that this vulnerability may enable further exploitation techniques beyond simple file reading, potentially allowing for command execution or privilege escalation within the virtualization environment.
The operational impact of CVE-2014-3485 extends significantly beyond simple information disclosure, as it undermines the fundamental security model of the virtualization platform. An authenticated attacker with access to the REST API can potentially extract sensitive data such as administrator credentials, virtual machine configurations, or system-level information that could be used for further attacks within the virtualized environment. This vulnerability particularly threatens organizations relying on oVirt for enterprise virtualization, as it compromises the integrity of the management interface that controls critical infrastructure components. The impact is amplified by the fact that the vulnerability affects a core management component, meaning that successful exploitation could potentially lead to complete compromise of the virtualization platform and its underlying resources.
Organizations should implement immediate mitigations including updating to patched versions of oVirt-engine that address the XXE vulnerability, disabling unnecessary XML processing capabilities in the REST API, and implementing strict input validation controls. The vulnerability aligns with CWE-611, which specifically addresses XML External Entity processing vulnerabilities, and may map to ATT&CK technique T1059 for command execution through API interfaces. Security teams should also consider implementing network segmentation to limit access to the REST API endpoints and establish monitoring for unusual XML processing patterns that might indicate exploitation attempts. The remediation process should include comprehensive testing of the patched environment to ensure that the XXE vulnerability has been properly addressed while maintaining system functionality.