CVE-2024-30124 in Sametime
Summary
by MITRE • 10/23/2024
HCL Sametime is impacted by insecure services in-use on the UIM client by default. An unused legacy REST service was enabled by default using the HTTP protocol. An attacker could potentially use this service endpoint maliciously.
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Analysis
by VulDB Data Team • 01/09/2026
The vulnerability identified as CVE-2024-30124 affects HCL Sametime client applications through the presence of insecure services that are enabled by default within the Universal Infrastructures Management (UIM) client component. This issue represents a classic example of insecure default configurations where legacy services remain active despite being unnecessary for current operations. The vulnerability specifically targets the default installation settings of the UIM client, where an outdated REST service operates over the unencrypted HTTP protocol without proper authentication mechanisms.
The technical flaw manifests through the default activation of a legacy REST endpoint that was designed for older system architectures but has not been properly deprecated or secured. This service operates using the HTTP protocol instead of the more secure HTTPS variant, creating multiple attack vectors for potential exploitation. The service remains enabled by default, meaning that organizations deploying HCL Sametime are automatically exposed to this vulnerability without explicit configuration changes. The legacy nature of this service suggests it may lack modern security controls, input validation, and authentication mechanisms that would be expected in contemporary web services.
The operational impact of this vulnerability extends beyond simple information disclosure risks. Attackers could potentially leverage this endpoint to execute unauthorized operations against the system, including but not limited to data manipulation, service disruption, or lateral movement within network environments. The HTTP protocol usage creates opportunities for man-in-the-middle attacks where network traffic can be intercepted and potentially modified. This vulnerability aligns with CWE-693, which addresses protection mechanism failures, and represents a specific instance of CWE-310, focusing on cryptographic weaknesses in protocol implementations. The default activation of insecure services also reflects poor security hygiene practices that can be exploited by threat actors who systematically scan for common vulnerabilities.
Organizations should immediately disable the unused legacy REST service through configuration changes to the UIM client settings. The recommended mitigation involves modifying the default service configurations to ensure that only necessary endpoints remain active and that all remaining services utilize secure communication protocols such as HTTPS. This vulnerability demonstrates the importance of regular security audits and the principle of least privilege in service deployment. Security teams should implement network segmentation to limit access to potentially vulnerable endpoints and establish monitoring procedures to detect unauthorized access attempts. The issue also highlights the need for comprehensive vulnerability management programs that regularly assess default configurations and ensure that legacy components are properly deprecated. This vulnerability can be mapped to ATT&CK technique T1190, which covers exploitation of remote services, and T1071.004, focusing on application layer protocol usage. Organizations should also consider implementing automated compliance checking tools to prevent such default configurations from persisting in production environments. The remediation process should include verification that the legacy service is completely disabled and that no alternative insecure endpoints remain accessible to unauthorized users.