CVE-2021-42561

Description

An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python "os.system" function. This allows attackers to use shell metacharacters (e.g., backticks "``" or dollar parenthesis "$()" ) in order to escape the current command and execute arbitrary shell commands.

CVSS Version 3.1

nvd

CVE ID: CVE-2021-42561
Base Score: 8.8
Base Severity: HIGH
Vector String:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 2.8

CVSS Version 2.0

nvd

CVE ID: CVE-2021-42561
Base Score: 9.0
Base Severity: HIGH
Vector String:AV:N/AC:L/Au:S/C:C/I:C/A:C

Proof Of Concept

mbadanoiu

CVE-2021-42561: Command Injection via the Human Plugin in MITRE Caldera

Refrence: GitHub

Refrence: NVD