CVE-2018-10508 in OfficeScan
Summary
by MITRE
A vulnerability in Trend Micro OfficeScan 11.0 SP1 and XG could allow a attacker to use a specially crafted URL to elevate account permissions on vulnerable installations. An attacker must already have at least guest privileges in order to exploit this vulnerability.
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Analysis
by VulDB Data Team • 02/18/2020
The vulnerability identified as CVE-2018-10508 represents a critical privilege escalation flaw within Trend Micro OfficeScan versions 11.0 SP1 and XG platforms. This weakness specifically targets the authentication and authorization mechanisms implemented within the OfficeScan management console, creating a pathway for malicious actors to gain elevated system privileges. The vulnerability stems from inadequate input validation and insufficient access control enforcement when processing specially crafted URLs within the web interface. Security researchers have classified this issue under CWE-284 which specifically addresses improper access control vulnerabilities, where the system fails to properly enforce authorization checks for operations that require elevated privileges. The flaw exists in the way the application handles URL parameters and session management, allowing attackers to manipulate the application's behavior through crafted requests.
The technical exploitation of this vulnerability requires an attacker to already possess guest-level access to the OfficeScan system, which serves as the initial foothold for privilege escalation. Once authenticated at the guest level, the attacker can construct malicious URLs that exploit the flawed authorization logic to elevate their privileges to administrative or system-level access. The vulnerability specifically affects the management console's handling of URL-based access control checks, where the application fails to properly validate user permissions before executing privileged operations. This weakness allows for bypassing the normal access control mechanisms that should prevent guest users from performing administrative actions. The flaw demonstrates a classic case of insufficient privilege validation where the application trusts user-provided URL parameters without proper verification of the authenticated user's actual privileges. This issue aligns with ATT&CK technique T1068 which describes the use of local privilege escalation techniques through application vulnerabilities, and T1548.001 which covers abuse of credentials for privilege escalation.
The operational impact of CVE-2018-10508 extends beyond simple privilege escalation, as it provides attackers with comprehensive control over the OfficeScan management console and potentially the underlying systems it manages. An attacker who successfully exploits this vulnerability can gain access to sensitive configuration data, modify security policies, disable protection features, and potentially exfiltrate system information. The vulnerability affects organizations that rely on Trend Micro OfficeScan for endpoint protection, as it undermines the integrity of the security management infrastructure. This weakness creates a significant risk for enterprises where OfficeScan is used to manage security policies across multiple endpoints, as unauthorized access to the management console could result in widespread security compromise. The impact is particularly severe in environments where the OfficeScan console is accessible from external networks or where guest-level access is granted to untrusted users. Organizations may face regulatory compliance violations and potential data breaches if this vulnerability is exploited successfully, as it directly compromises the security controls that protect against unauthorized access to critical system management functions.
Mitigation strategies for CVE-2018-10508 should focus on immediate patch deployment from Trend Micro, as the vendor has released security updates addressing this specific privilege escalation vulnerability. Organizations should implement network segmentation to limit access to the OfficeScan management console, ensuring that only authorized administrative users can reach the system. Additional defensive measures include implementing web application firewalls to monitor and filter suspicious URL patterns, conducting regular security audits of access control configurations, and establishing strict network access controls for the management interface. Security teams should also implement monitoring for unusual access patterns and privilege escalation attempts within the OfficeScan environment. The vulnerability underscores the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies. Organizations should review their current access control policies and ensure that guest-level access is properly restricted to prevent unauthorized users from reaching potentially vulnerable management interfaces. Regular security assessments of web applications and management consoles should be conducted to identify similar privilege escalation vulnerabilities that may exist in other security tools within the organization's infrastructure.