CVE-2016-10041

Technical Description

An issue was discovered in Sprecher Automation SPRECON-E Service Program before 3.43 SP0. Under certain preconditions, it is possible to execute telegram simulation as a non-admin user. As prerequisites, a user must have created an online-connection, validly authenticated and authorized as administrator, and executed telegram simulation. After that, the online-connection must have been closed. Incorrect caching of client data then may lead to privilege escalation, where a subsequently acting non-admin user is permitted to do telegram simulation. In order to exploit this vulnerability, a potential attacker would need to have both a valid engineering-account in the SPRECON RBAC system as well as access to a service/maintenance computer with SPRECON-E Service Program running. Additionally, a valid admin-user must have closed the service connection beforehand without closing the program, having executed telegram simulation; the attacker then has access to the running software instance. Hen

Remediation

Check the references section for vendor advisories and patches from sprecher-automation. Update sprecon-e_service_program to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

References