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CVE-2021-42561

Date: January 12, 2022

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.

Language: Python

Severity Score

Related Resources (4)

https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2021-42561-Command%20Injection%20Via%20the%20Human%20Plugin-MITRE%20Caldera
https://nvd.nist.gov/vuln/detail/CVE-2021-42561
https://github.com/mitre/caldera/releases
https://www.mend.io/vulnerability-database/CVE-2021-42561

Severity Score

Weakness Type (CWE)

Argument Injection or Modification

CWE-88

Injection

CWE-74

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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