CVE-2011-3684 in Server Monitor
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Tembria Server Monitor before 6.0.5 Build 2252 allow remote attackers to inject arbitrary web script or HTML via (1) the siteid parameter to logbook.asp, (2) the siteid parameter to monitor-events.asp, (3) the siteid parameter to reports-config-by-device.asp, (4) the siteid parameter to reports-config-by-monitor.asp, (5) the siteid parameter to reports-monitoring-queue.asp, (6) the action parameter to site-list.asp, the (7) siteid or (8) type parameter to event-history.asp, the (9) siteid or (10) type parameter to admin-history.asp, the (11) siteid or (12) id parameter to dashboard-view.asp, the (13) siteid or (14) dn parameter to device-events.asp, the (15) siteid or (16) submit parameter to device-finder.asp, the (17) siteid or (18) dn parameter to device-monitors.asp, the (19) siteid or (20) type parameter to device-views.asp, the (21) siteid or (22) type parameter to monitor-views.asp, the (23) siteid or (24) sel parameter to reports-list.asp, the (25) siteid, (26) action, or (27) sel parameter to monitor-list.asp, or the (28) siteid, (29) action, or (30) sel parameter to device-list.asp.
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Analysis
by VulDB Data Team • 01/24/2018
The vulnerability described in CVE-2011-3684 represents a critical cross-site scripting flaw affecting Tembria Server Monitor versions prior to 6.0.5 Build 2252. This issue stems from inadequate input validation and sanitization mechanisms within multiple web endpoints, creating numerous attack vectors that could be exploited by remote threat actors. The vulnerability specifically targets parameters within various ASP pages that handle site identifiers and other user-supplied data, making it particularly dangerous as it affects core monitoring functionality and administrative interfaces. The flaw allows attackers to inject malicious scripts that execute in the context of authenticated users' browsers, potentially leading to complete session hijacking and unauthorized system access.
The technical implementation of this vulnerability manifests through improper handling of user input parameters across multiple web pages within the Tembria Server Monitor application. The affected parameters include siteid, action, type, id, dn, submit, sel, and others that are processed without adequate sanitization or encoding mechanisms. When these parameters are passed to server-side scripts, the application fails to validate or escape special characters that could be interpreted as HTML or JavaScript code. This lack of input validation creates persistent XSS opportunities where attackers can embed malicious payloads that execute in the victim's browser when the affected pages are accessed. The vulnerability operates at the application layer and specifically violates security principles outlined in CWE-79, which addresses Cross-Site Scripting flaws.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with potential access to sensitive monitoring data and system controls. An attacker could exploit these vulnerabilities to steal session cookies, redirect users to malicious sites, or modify monitoring configurations through the administrative interfaces. The wide scope of affected endpoints suggests that the vulnerability could be leveraged to gain comprehensive access to the monitoring system, potentially compromising the integrity of critical infrastructure monitoring data. The attack surface includes not only standard monitoring views but also administrative functions like event history, device management, and reporting configurations, making this a particularly severe vulnerability for enterprise environments relying on server monitoring solutions.
Organizations affected by this vulnerability should prioritize immediate remediation through the official Tembria Server Monitor update to version 6.0.5 Build 2252 or later, as this represents the definitive fix for the XSS issues. Additionally, implementing input validation and output encoding mechanisms at the application level can provide defense-in-depth protection against similar vulnerabilities. Security teams should conduct comprehensive vulnerability assessments of all web applications to identify similar input validation flaws, particularly focusing on parameters that are directly rendered in HTML output. Network segmentation and web application firewalls can provide additional protection layers, though they should not be considered replacements for proper code-level fixes. The vulnerability's classification aligns with ATT&CK technique T1566, which covers social engineering through malicious web content, and represents a common attack pattern that could be exploited in broader campaign targeting enterprise monitoring infrastructure.