Honeywell patched a buffer overflow vulnerability resulting in a denial-of-service condition in the Uniformance Process History Database (PHD), according to a report with ICS-CERT.

In addition, affected processes identified by Lei ChengLin (Z-One) from Fengtai Technologies’ (Beijing) Security Research Team also ended up suffering from the remotely exploitable vulnerability.

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The vulnerability affects the following versions:
• Uniformance PHD, versions prior to R310.1.1.2
• Uniformance PHD, versions prior to R320.1.0.2
• Uniformance PHD, versions prior to R321.1.1

Successful exploitation of this vulnerability may cause processes running on the affected device to become unresponsive, resulting in a denial-of-service condition.

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Honeywell is a U.S.-based company that maintains offices worldwide.

Uniformance PHD works with the DCS to provide a historian for engineering and business analytics. Uniformance PHD products see action across several sectors including chemical, critical manufacturing, energy, and water and wastewater systems. These products see use on a global basis.

A buffer overflow vulnerability ended up discovered in Network.dll that can cause these processes to become unresponsive requiring the affected device to restart. The Network.dll is in the following files: RDISERVER, RAPIServer, apiserver, and UDBServer.

CVE-2016-2280 is the case number assigned to this vulnerability, which has a CVSS v3 base score of 7.5.

No known public exploits specifically target this vulnerability. However, an attacker with a low skill would be able to exploit this vulnerability.

Honeywell released a new version of the Network.dll, which mitigates the buffer overflow vulnerability. The new version of the Network.dll is available in the following Uniformance PHD versions: R310.1.1.2, R320.1.0.2, and R321.1.1.

For more information about this vulnerability and how to apply the patches, please see Honeywell’s Security Notification SN 2016-01-27 under the support tab.

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