Cross-Site-Scripting (XSS) Vulnerability in SINEMA Server V14
Plan Patch8.3SSA-594373Oct 10, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityHigh
User InteractionRequired
Summary
SINEMA Server V14 improperly sanitizes SNMP configuration data retrieved from monitored devices. An attacker with access to a monitored device could perform a stored cross-site scripting (XSS) attack that may lead to arbitrary code execution with SYSTEM privileges on the SINEMA Server application server. No patches are available for V14; migration to SINEC NMS V2.0 or later is required.
What this means
What could happen
An attacker who can compromise a monitored device or inject malicious SNMP data could execute arbitrary code with SYSTEM privileges on the SINEMA Server application server, potentially allowing them to take complete control of your network monitoring infrastructure and the devices it manages.
Who's at risk
Network monitoring personnel and infrastructure operators who rely on SINEMA Server V14 for industrial device monitoring across water utilities, power systems, and manufacturing. The risk is highest for organizations where SINEMA Server is accessible to multiple administrative users or where monitored devices are not fully controlled or protected.
How it could be exploited
An attacker with access to a device monitored by SINEMA Server (or able to intercept/spoof SNMP traffic to it) injects malicious JavaScript into SNMP configuration responses. When an administrator views the affected configuration in the SINEMA Server web interface, the payload executes in their browser with SYSTEM privileges, allowing the attacker to run commands on the server.
Prerequisites
- Network access to a device monitored by SINEMA Server or ability to intercept/modify SNMP traffic to the server
- Administrator interaction required: an admin must view the crafted SNMP configuration data in the SINEMA Server web interface
remotely exploitableno authentication required for SNMP injectionrequires user interaction (admin must view payload)no patch availableaffects network monitoring and control infrastructure
Exploitability
Low exploit probability (EPSS 0.2%)
Affected products (1)
ProductAffected VersionsFix Status
SINEMA Server V14All versionsNo fix (EOL)
Remediation & Mitigation
0/4
Do now
0/1WORKAROUNDRestrict network access to all monitored devices using firewall rules to limit which hosts can send SNMP data to SINEMA Server
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HOTFIXMigrate from SINEMA Server V14 to SINEC NMS V2.0 or later
Mitigations - no patch available
0/2SINEMA Server V14 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGImplement network segmentation to isolate monitored devices and SINEMA Server on a separate management network with restricted administrative access
HARDENINGApply SNMP authentication and encryption (SNMPv3) to prevent unauthorized SNMP data injection
CVEs (1)
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API:
/api/v1/advisories/e6f3ebcc-b91a-4e7b-befd-94591d2d9d6c