Certec atvise scada OpenSSL Heartbleed Vulnerability
Act NowICS-CERT ICSA-14-114-01Jan 25, 2014
Summary
Certec atvise scada contains an OpenSSL Heartbleed vulnerability (CWE-119). This is an information disclosure flaw in OpenSSL that allows attackers to read sensitive data from system memory without authentication. The vulnerability affects atvise scada versions 2.3 and later. No vendor fix is available.
What this means
What could happen
An attacker could extract sensitive data from memory of the atvise scada system, including credentials, keys, and operational data, without needing valid access credentials. This data could be used to gain further access to your SCADA environment or impersonate legitimate users.
Who's at risk
Energy sector operators running atvise scada 2.3 or later should be concerned. This includes electric utilities, independent power producers, and other energy infrastructure operators who use this SCADA platform for process monitoring and control. Any organization relying on atvise scada for critical process visibility is at risk of credential theft and system compromise.
How it could be exploited
An attacker with network access to the atvise scada server (typically on port 443 for HTTPS) can send specially crafted heartbeat requests to the vulnerable OpenSSL service. The server responds by leaking 64 KB of unencrypted memory contents per request. The attacker repeats this to extract credentials, keys, and other sensitive data without needing to authenticate.
Prerequisites
- Network access to atvise scada server port 443 (HTTPS)
- Vulnerable OpenSSL version in use (versions affected by Heartbleed, prior to OpenSSL 1.0.1g)
- atvise scada version 2.3 or later
remotely exploitableno authentication requiredlow complexityactively exploited (KEV)high EPSS score (94.5%)no patch availableaffects SCADA/critical infrastructure
Exploitability
Actively exploited — confirmed by CISA KEV
Affected products (1)
ProductAffected VersionsFix Status
atvise scada: >=2.3≥ 2.3No fix (EOL)
Remediation & Mitigation
0/5
Do now
0/3HARDENINGIsolate the atvise scada system from untrusted networks using a firewall. Restrict access to the HTTPS port (443) to only authorized engineering workstations and control room networks.
WORKAROUNDDisable TLS/HTTPS on atvise scada if you can operate without it, or use an external TLS proxy with a patched OpenSSL version to front-end the vulnerable server.
HARDENINGRotate all credentials (passwords, API keys, certificates) used by or stored on the atvise scada system immediately, as they may have been compromised.
Schedule — requires maintenance window
0/1Patching may require device reboot — plan for process interruption
HARDENINGMonitor network traffic to and from the atvise scada server for suspicious heartbeat patterns or excessive connections that may indicate exploitation attempts.
Mitigations - no patch available
0/1atvise scada: >=2.3 has reached End of Life. The vendor will not release a patch. Apply the following compensating controls:
HARDENINGPlan migration away from atvise scada to a supported, patched SCADA platform. Contact the vendor to understand long-term support and lifecycle management options.
CVEs (1)
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