CVE-2005-0545 in Windows
Summary
by MITRE
microsoft windows xp pro sp2 and windows 2000 server sp4 running active directory allow local users to bypass group policies that restrict access to hidden drives by using the browse feature in office 10 applications such as word or excel or using a flash drive. note: this issue has been disputed in a followup post.
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Analysis
by VulDB Data Team • 07/01/2021
This vulnerability affects Microsoft Windows xp professional service pack 2 and windows 2000 server service pack 4 systems running active directory environments. The flaw represents a privilege escalation issue that allows local users to circumvent group policy restrictions designed to hide specific drives from end users. The vulnerability stems from how windows handles drive visibility when users interact with office 10 applications through the browse feature or when connecting removable storage devices such as flash drives. According to the original description, attackers can exploit this weakness to gain access to hidden drives that should normally be restricted by group policies. This represents a significant security gap in windows access control mechanisms where the operating system fails to properly enforce visibility restrictions during common user activities involving file browsing and storage device interaction. The vulnerability specifically impacts systems where active directory is configured to hide certain drives from users through group policy objects, creating an unexpected bypass mechanism that undermines the intended security posture.
The technical nature of this vulnerability relates to improper access control enforcement within windows file system operations. When users interact with office applications through the browse feature or connect removable storage devices, the operating system's drive enumeration and visibility handling mechanisms fail to properly respect the group policy restrictions that should prevent access to hidden drives. This issue falls under the category of insufficient privilege checking and access control enforcement, which aligns with common weakness enumerations such as cwe-284 for improper access control and cwe-250 for execution with insecure privileges. The vulnerability exploits the gap between the intended security policy enforcement and the actual implementation of access restrictions during user interaction with file browsing features. The flaw essentially allows local users to perform operations that should be restricted by access control policies, creating an unexpected path for privilege escalation and unauthorized data access.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more serious security breaches. Local users who exploit this weakness can gain access to drives that are intentionally hidden from them through group policy configurations, potentially exposing sensitive data that should remain protected. This issue particularly affects enterprise environments where active directory is used to manage security policies and where administrators rely on drive hiding mechanisms to prevent unauthorized access to specific storage locations. The vulnerability can be exploited through legitimate user activities such as opening files in office applications or connecting removable storage devices, making it difficult to detect and prevent through traditional monitoring approaches. Attackers can leverage this weakness to access restricted data or potentially escalate privileges further by gaining access to system resources that should remain hidden. The impact is particularly concerning in environments where sensitive data is stored on hidden drives and where administrators depend on group policy enforcement for access control.
Mitigation strategies for this vulnerability should focus on implementing comprehensive access control measures and monitoring user activities that could indicate exploitation attempts. Organizations should ensure that windows systems are properly updated with the latest security patches and service packs from microsoft, as this vulnerability was addressed through official security updates. System administrators should review and validate group policy configurations to ensure that access control restrictions are properly enforced across all user interaction points, including file browsing operations and removable storage device handling. Additional security measures include implementing monitoring solutions that track unusual file access patterns or attempts to access restricted drives through office applications. The principle of least privilege should be enforced more rigorously, ensuring that users only have access to resources necessary for their specific roles. Organizations should also consider implementing additional layers of security such as disk encryption for sensitive data and regular security assessments to identify potential bypass mechanisms that could undermine existing access control policies. This vulnerability demonstrates the importance of comprehensive security testing that evaluates how different system components interact and enforce access controls during common user operations.