CVE-2013-4785 in Web Interface
Summary
by MITRE
The web interface on the Dell iDRAC6 with firmware before 1.95 allows remote attackers to modify the CLP interface for arbitrary users and possibly have other impact via a request to an unspecified form that is accessible from testurls.html. NOTE: the vendor disputes the significance of this issue, stating "DRAC s are intended to be on a separate management network; they are not designed nor intended to be placed on or connected to the Internet."
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Analysis
by VulDB Data Team • 12/25/2024
The CVE-2013-4785 vulnerability affects Dell iDRAC6 remote management controllers running firmware versions prior to 1.95, presenting a significant security risk through its web interface implementation. This flaw resides in the authentication and authorization mechanisms of the web-based management interface, specifically within the CLP (Command Line Processor) functionality that controls user access and administrative privileges. The vulnerability manifests through an unspecified form accessible via testurls.html, which allows unauthorized modification of CLP interfaces for arbitrary users, effectively bypassing normal access controls and potentially enabling privilege escalation attacks.
The technical nature of this vulnerability aligns with CWE-284, which addresses improper access control issues in software systems. Attackers can exploit this weakness remotely without requiring authentication credentials, making it particularly dangerous in environments where iDRAC6 devices are accessible from untrusted networks. The flaw essentially allows malicious actors to manipulate user permissions and access levels within the iDRAC6 management interface, potentially enabling them to gain unauthorized administrative control over the managed servers. This represents a critical breakdown in the principle of least privilege and demonstrates inadequate input validation and access control enforcement within the web application layer of the iDRAC6 firmware.
The operational impact of this vulnerability extends beyond simple privilege escalation, potentially enabling comprehensive system compromise through the management interface. Attackers could modify user accounts, change administrative passwords, disable security features, or even execute arbitrary commands through the compromised CLP interface. This vulnerability undermines the fundamental security posture of servers that rely on iDRAC6 for remote management, particularly in environments where management interfaces are not properly isolated from public networks. The affected systems may experience unauthorized access to sensitive server configurations, potential data exfiltration, and complete loss of administrative control over the managed hardware, making this a critical concern for enterprise security infrastructure.
Organizations should implement immediate mitigations including firmware updates to version 1.95 or later, which address the access control flaw through proper authentication enforcement and input validation. Network segmentation remains crucial as a defense-in-depth strategy, ensuring that iDRAC6 interfaces operate on isolated management networks separate from production environments. Access controls should be implemented at multiple layers including firewall rules, network access control lists, and proper VLAN configurations to prevent unauthorized access to the management interfaces. Additionally, security monitoring should be enhanced to detect anomalous access patterns or unauthorized modifications to management interfaces, as outlined in the attack techniques documented in the MITRE ATT&CK framework under the T1078 and T1566 categories. The vendor's position that these devices should operate on separate management networks does not negate the need for proper security controls, as the vulnerability exists regardless of network isolation and can be exploited when management interfaces are improperly configured or when network boundaries are compromised.