CVE-2016-0354 in Sametime Enterprise Meeting Server
Summary
by MITRE
IBM Sametime Enterprise Meeting Server 8.5.2 and 9.0 could allow an authenticated user to upload a malicious file to a Sametime meeting room, that could be downloaded by unsuspecting users which could be executed with user privileges. IBM X-Force ID: 111893.
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Analysis
by VulDB Data Team • 01/10/2021
The vulnerability identified as CVE-2016-0354 affects IBM Sametime Enterprise Meeting Server versions 8.5.2 and 9.0, representing a critical file upload security flaw that enables authenticated users to compromise meeting room environments. This vulnerability operates within the context of collaborative meeting platforms where users expect secure file sharing capabilities, yet the implementation contains a significant oversight in input validation and file handling mechanisms. The flaw specifically manifests when authenticated users can upload malicious files to shared meeting rooms, creating a persistent threat vector that extends beyond the immediate meeting session.
The technical implementation of this vulnerability stems from inadequate validation of file uploads within the Sametime meeting room functionality. When users upload files to meeting rooms, the system fails to properly sanitize or validate the file types being submitted, allowing potentially harmful content to be stored and subsequently downloaded by other meeting participants. This represents a classic server-side file upload vulnerability that aligns with CWE-434, which describes the weakness of allowing files to be uploaded to a web application without proper validation. The vulnerability enables a malicious user to exploit the legitimate file sharing features of the platform to deliver malicious payloads through seemingly benign meeting room file exchanges.
The operational impact of this vulnerability extends far beyond simple privilege escalation, as it creates a persistent threat that can affect any user who accesses the compromised meeting room. When unsuspecting users download and execute the malicious files, they inadvertently run code with the privileges of their current user account, potentially leading to complete system compromise. This attack vector represents a sophisticated social engineering component combined with technical exploitation, as the malicious files appear to be legitimate meeting room content. The threat landscape for this vulnerability aligns with ATT&CK technique T1193, which involves the use of malicious file downloads to establish initial access or persistence within target environments. The attack can be particularly damaging in enterprise settings where meeting rooms often contain sensitive business information and where users may not be security-aware of the risks associated with downloading files from shared meeting spaces.
Mitigation strategies for this vulnerability should focus on implementing robust file validation mechanisms, including strict file type checking and content analysis to prevent malicious files from being stored within meeting rooms. Organizations should consider implementing network segmentation and access controls to limit the scope of potential exploitation, while also ensuring that meeting room file sharing features are properly configured to restrict upload capabilities to trusted users only. Additionally, regular security updates and patches should be applied immediately upon availability, as IBM would have released remediation measures for this specific vulnerability. Security monitoring should include detection of unusual file upload patterns and suspicious download activities within meeting room environments, while user education programs should emphasize the risks of downloading files from shared meeting spaces. The vulnerability demonstrates the critical importance of secure file handling in collaborative platforms and underscores the necessity of comprehensive security controls throughout the application lifecycle.