CVE-2014-6256 in Zenoss
Summary
by MITRE
Zenoss Core through 5 Beta 3 allows remote attackers to bypass intended access restrictions and place files in a directory with public (1) read or (2) execute access via a move action, aka ZEN-15386.
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Analysis
by VulDB Data Team • 09/10/2024
The vulnerability identified as CVE-2014-6256 affects Zenoss Core versions through 5 Beta 3, representing a critical access control flaw that enables remote attackers to circumvent intended security restrictions. This vulnerability specifically targets the file management system within Zenoss Core, where unauthorized users can exploit a move action to place files in directories that have public read or execute permissions. The issue stems from inadequate validation of file operations and insufficient authorization checks during directory manipulation processes, creating a pathway for privilege escalation and potential system compromise.
The technical implementation of this vulnerability involves a flaw in the file system access controls where the application fails to properly verify user permissions before executing move operations. Attackers can leverage this weakness to transfer files into directories that are publicly accessible, potentially allowing them to execute malicious code or access sensitive information. The vulnerability operates at the application layer and requires no special privileges to exploit, making it particularly dangerous as it can be triggered remotely without authentication. This flaw directly relates to CWE-284, which addresses improper access control, and specifically manifests as a lack of proper authorization checks during file system operations.
The operational impact of CVE-2014-6256 extends beyond simple unauthorized file placement, as it can enable attackers to establish persistent access points within the system. When files are moved into directories with public execute permissions, attackers can potentially run malicious payloads that could lead to full system compromise. The vulnerability also poses risks to data confidentiality and integrity, as unauthorized users can manipulate file contents and potentially overwrite critical system files. Organizations using affected Zenoss Core versions face significant exposure to remote code execution attacks, especially in environments where public access to monitoring systems is required for legitimate operations.
Mitigation strategies for this vulnerability should focus on immediate patch application as provided by Zenoss, which addresses the core access control flaws in file management operations. Network segmentation and firewall rules should be implemented to restrict access to Zenoss Core systems, particularly limiting direct internet exposure of monitoring platforms. Additionally, implementing strict file system permissions and monitoring for unauthorized file movements can help detect exploitation attempts. Security teams should also consider implementing intrusion detection systems that monitor for suspicious file operations and ensure that all user accounts have least privilege access. The vulnerability aligns with ATT&CK technique T1059, which covers command and scripting interpreter, as attackers could leverage the ability to place executable files in public directories to execute malicious code. Regular security audits and penetration testing should be conducted to verify that access controls remain properly configured and that no similar vulnerabilities exist in related systems or applications.