CVE-2020-15593 Information

Description

SteelCentral Aternity Agent 11.0.0.120 on Windows mishandles IPC. It uses an executable running as a high privileged Windows service to perform administrative tasks and collect data from other processes. It distributes functionality among different processes and uses IPC (Inter-Process Communication) primitives to enable the processes to cooperate. Any user in the system is allowed to access the interprocess communication channel AternityAgentAssistantIpc retrieve a serialized object and call object methods remotely. Among others the methods allow any user to: (1) Create and/or overwrite arbitrary XML files across the system; (2) Create arbitrary directories across the system; and (3) Load arbitrary plugins (i.e. C assemblies) from the \PROGRAMFILES(X86)/Aternity Information Systems/Assistant/plugins” directory and execute code contained in them.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://aternity.force.com/customersuccess/s/article/Recorder-tool-security-notification-mitigation-steps-for-On-Prem https://sec-consult.com/en/blog/advisories/privilege-escalation-vulnerability-in-steelcentral-aternity-agent-cve-2020-15592-cve-2020-15593/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8