Heap-based buffer overflow in OpenEnterprise - CVE-2020-6970

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing scripts. A remote attacker can use a specially crafted script, trigger heap-based buffer overflow and execute arbitrary code on the OpenEnterprise Server.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note: The following versions of OpenEnterprise SCADA Server are affected:

• OpenEnterprise Server 2.83 is affected if Modbus or ROC Interfaces have been installed and are in use
• OpenEnterprise 3.1 through 3.3.3, all versions

How to mitigate CVE-2020-6970

Sources

• https://ics-cert.us-cert.gov/advisories/icsa-20-049-02
• https://ics-cert.kaspersky.com/advisories/klcert-advisories/2020/03/23/klcert-20-003-remote-code-execution-on-emerson-openenterprise-scada-server-version-2-83-and-all-versions-of-openenterprise-3-1-through-3-3-3/