CVE-2018-18862 in Remedy Mid-Tier
Summary
by MITRE
BMC Remedy Mid-Tier 7.1.00 and 9.1.02.003 for BMC Remedy AR System has Incorrect Access Control in ITAM forms, as demonstrated by TLS%3APLR-Configuration+Details/Default+Admin+View/, AST%3AARServerConnection/Default+Admin+View/, and AR+System+Administration%3A+Server+Information/Default+Admin+View/.
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Analysis
by VulDB Data Team • 08/03/2023
The vulnerability CVE-2018-18862 represents a critical access control flaw within BMC Remedy Mid-Tier versions 7.1.00 and 9.1.02.003 that affects the ITAM (IT Asset Management) forms functionality. This issue stems from improper authorization controls that allow unauthorized users to access sensitive administrative views through specific URL paths including TLS%3APLR-Configuration+Details/Default+Admin+View/, AST%3AARServerConnection/Default+Admin+View/, and AR+System+Administration%3A+Server+Information/Default+Admin+View/. The vulnerability manifests as a failure in the authentication and authorization mechanisms that should normally restrict access to privileged administrative interfaces.
The technical implementation of this flaw involves the Mid-Tier application's inability to properly validate user permissions when accessing specific administrative forms within the BMC Remedy AR System environment. This misconfiguration allows attackers to bypass normal access controls by directly navigating to predetermined URL patterns that expose administrative views. The vulnerability specifically affects the ITAM forms functionality where sensitive server configuration information, connection details, and system administration views become accessible without proper authentication. This represents a classic authorization bypass vulnerability that falls under CWE-285, which addresses improper authorization in software applications.
The operational impact of this vulnerability is severe as it provides attackers with unauthorized access to critical system information that could be used for further exploitation. The exposed administrative views contain sensitive data including server connection parameters, configuration details, and system information that could facilitate advanced persistent threats or lateral movement within the network. Attackers could potentially leverage this access to escalate privileges, modify system configurations, or extract confidential information from the BMC Remedy environment. The vulnerability affects organizations using BMC Remedy Mid-Tier 7.1.00 and 9.1.02.003, which represent common versions in enterprise environments where IT asset management and system administration are critical functions.
From a cybersecurity perspective, this vulnerability aligns with ATT&CK technique T1078.004 which covers valid accounts for lateral movement and privilege escalation. The flaw enables adversaries to gain access to administrative interfaces that would normally be restricted to authorized personnel only. Organizations implementing BMC Remedy systems should immediately apply the vendor-provided patches or updates that address this access control issue. The remediation process involves ensuring proper authentication and authorization controls are enforced at the Mid-Tier level for all administrative forms and views. Security teams should also implement network segmentation and monitoring to detect unauthorized access attempts to these specific URL patterns. The vulnerability demonstrates the importance of proper access control implementation and highlights the need for regular security assessments of enterprise applications to identify and remediate authorization bypass opportunities that could lead to significant security breaches.