CVE-2011-1370 in Lotus Sametime
Summary
by MITRE
The default configuration of the Sametime configuration servlet (SCS) in the server in IBM Lotus Sametime 7.0 through 8.5.2 does not enable an authentication requirement, which allows remote attackers to read the configuration settings by examining a response message.
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Analysis
by VulDB Data Team • 11/25/2021
The vulnerability described in CVE-2011-1370 represents a critical security flaw in IBM Lotus Sametime server implementations across versions 7.0 through 8.5.2. This issue stems from the default configuration of the Sametime Configuration Servlet (SCS) which fails to enforce proper authentication mechanisms, creating an unintended information disclosure vulnerability that exposes sensitive server configuration data to unauthenticated remote attackers. The flaw exists within the server-side component that handles configuration requests, specifically the SCS servlet that processes configuration-related HTTP requests without requiring valid authentication credentials. This configuration oversight allows attackers to directly access and retrieve detailed server configuration information simply by sending appropriately crafted requests to the vulnerable endpoint. The vulnerability is particularly concerning because it affects multiple versions of the Sametime server platform, indicating a widespread issue that has persisted across several releases and likely impacts organizations with legacy deployments.
The technical implementation of this vulnerability demonstrates a fundamental failure in the security by design principles that should govern server-side applications. The SCS servlet operates under the assumption that configuration data can be accessed without verification of the requester's identity, which directly violates the principle of least privilege and proper access control mechanisms. Attackers can exploit this by sending HTTP requests to specific endpoints within the Sametime server, typically targeting the configuration servlet path, and receive responses containing sensitive information such as server settings, user configurations, network parameters, and potentially authentication-related details. This misconfiguration creates an information disclosure scenario where the server inadvertently provides unauthorized access to configuration artifacts that should remain protected within the administrative domain. The vulnerability is classified under CWE-200, which specifically addresses "Information Exposure" and represents a direct failure in implementing proper authentication controls for sensitive server endpoints.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed configuration data can serve as a foundation for more sophisticated attacks against the Sametime infrastructure. When attackers obtain detailed server configuration information, they gain insights into network topology, server naming conventions, user base characteristics, and potentially sensitive system parameters that can be leveraged in subsequent attack phases. This information can be particularly valuable for attackers planning targeted attacks against the Sametime environment, as it provides them with knowledge about server structure, potential vulnerabilities in configuration settings, and operational patterns that could be exploited. The vulnerability also impacts the overall security posture of organizations using Sametime, as it allows attackers to gather intelligence about the internal workings of the collaboration platform without requiring any valid credentials or authentication tokens. From an attacker's perspective, this represents a low-effort, high-reward opportunity that can significantly reduce the attack surface and complexity of subsequent exploitation attempts.
Organizations affected by CVE-2011-1370 should implement immediate remediation measures to address the authentication deficiency in their Sametime server configurations. The primary mitigation involves configuring the SCS servlet to require proper authentication before serving configuration responses, which can be achieved through standard web server security mechanisms or by modifying the servlet configuration files to enforce access controls. Security administrators should also consider implementing additional network-level controls such as firewall rules to restrict access to the vulnerable servlet endpoints, particularly to limit access to trusted administrative networks. The vulnerability aligns with ATT&CK technique T1212, which focuses on "Exploitation for Credential Access" and demonstrates how information disclosure can enable attackers to gather the necessary intelligence for more advanced exploitation techniques. Regular security assessments should be conducted to ensure that default configurations are properly hardened and that no similar authentication bypass vulnerabilities exist in other servlet components or server modules. Additionally, organizations should establish monitoring procedures to detect unauthorized access attempts to sensitive server endpoints and maintain updated security policies that address the proper handling of server configuration data. The remediation process should also include comprehensive testing to ensure that legitimate administrative access continues to function properly while unauthorized access attempts are properly blocked.