CVE-2014-0255 in Windows
Summary
by MITRE
Microsoft Windows Server 2008 SP2 and R2 SP1 and Server 2012 Gold and R2 allow remote attackers to cause a denial of service (iSCSI service outage) by sending many crafted packets, aka "iSCSI Target Remote Denial of Service Vulnerability."
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Analysis
by VulDB Data Team • 06/19/2021
The CVE-2014-0255 vulnerability represents a critical remote denial of service flaw affecting Microsoft Windows Server 2008 SP2 and R2 SP1, as well as Windows Server 2012 Gold and R2 editions. This vulnerability specifically targets the iSCSI target service, which plays a fundamental role in storage area network communications by enabling servers to present storage devices to other systems over network protocols. The flaw allows remote attackers to disrupt critical storage services through the careful construction and transmission of multiple network packets, fundamentally compromising system availability and business continuity operations. The vulnerability operates at the network protocol level, making it particularly dangerous as it can be exploited from remote locations without requiring local system access or authentication credentials.
The technical mechanism underlying this vulnerability involves the improper handling of crafted iSCSI packets by the target service implementation within Windows Server operating systems. When the iSCSI target service receives these specially constructed packets, it fails to properly validate or process the incoming data structures, leading to service instability and eventual termination of the iSCSI service. This type of flaw falls under the category of resource exhaustion or protocol handling errors, where the service becomes overwhelmed by malformed input that causes it to crash or become unresponsive. The vulnerability specifically affects the iSCSI target service which is responsible for managing storage targets and their associated connections, making it a critical component for enterprise storage infrastructure. According to CWE classification, this vulnerability maps to CWE-121, which describes heap-based buffer overflow conditions, and CWE-129, which covers invalid input validation issues, both of which are common attack vectors in network protocol implementations.
The operational impact of CVE-2014-0255 extends far beyond simple service interruption, as it can severely compromise enterprise storage infrastructure and business operations. Organizations relying on Windows Server environments for their storage solutions face significant risks including extended downtime, potential data loss during service recovery, and disruption of critical applications that depend on iSCSI storage connectivity. The vulnerability's remote exploitability means that attackers can target systems from outside the network perimeter, making traditional network security controls less effective against this specific threat. The impact is particularly severe in enterprise environments where iSCSI services are heavily utilized for database storage, virtualization platforms, and other mission-critical applications. From an ATT&CK framework perspective, this vulnerability aligns with the T1499.004 technique for network denial of service attacks, specifically targeting storage network services and demonstrating the importance of protecting critical infrastructure components from remote exploitation.
Mitigation strategies for CVE-2014-0255 should prioritize immediate implementation of Microsoft security patches and updates, as the vulnerability was addressed through official Microsoft security bulletins. Organizations should also implement network segmentation and access controls to limit exposure of iSCSI target services to trusted networks only, while monitoring for suspicious packet patterns that might indicate exploitation attempts. Network administrators should configure firewalls to restrict iSCSI traffic to necessary endpoints and implement intrusion detection systems that can identify and alert on malformed iSCSI packets. Additionally, organizations should conduct regular vulnerability assessments to identify any remaining instances of affected systems and ensure comprehensive patch management processes are in place. The vulnerability highlights the importance of maintaining up-to-date security controls and demonstrates how even seemingly specialized services like iSCSI target implementations can become attack vectors when proper input validation and error handling mechanisms are lacking. Organizations should also consider implementing redundant storage services and backup procedures to minimize business impact should such vulnerabilities be exploited in production environments.