CVE-2021-4041

Ansible: Improper shell escaping in ansible-runner

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in ansible-runner. An improper escaping of the shell command, while calling the ansible_runner.interface.run_command, can lead to parameters getting executed as host's shell command. A developer could unintentionally write code that gets executed in the host rather than the virtual environment.

Se ha encontrado un fallo en ansible-runner. Un escape inapropiado del comando shell, mientras es llamado a ansible_runner.interface.run_command, puede conllevar a que los parámetros sean ejecutados como el comando shell del host. Un desarrollador podría escribir involuntariamente código que es ejecutado en el host en lugar de en el entorno virtual.

Red Hat Ansible Automation Platform provides an enterprise framework for building, deploying and managing IT automation at scale. IT Managers can provide top-down guidelines on how automation is applied to individual teams, while automation developers retain the freedom to write tasks that leverage existing knowledge without the overhead. Ansible Automation Platform makes it possible for users across an organization to share, vet, and manage automation content by means of a simple, powerful, and agentless language.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-12-02 CVE Reserved
2022-01-16 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-116: Improper Encoding or Escaping of Output

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2028074	2022-01-11
https://github.com/ansible/ansible-runner/commit/3533f265f4349a3f2a0283158cd01b59a6bbc7bd	2022-08-29

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-4041	2022-01-11

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Ansible Runner Search vendor "Redhat" for product "Ansible Runner"				< 2.1.0 Search vendor "Redhat" for product "Ansible Runner" and version " < 2.1.0"		-		Affected
Redhat Search vendor "Redhat"		Ansible Runner Search vendor "Redhat" for product "Ansible Runner"				2.1.0 Search vendor "Redhat" for product "Ansible Runner" and version "2.1.0"		alpha1		Affected
Redhat Search vendor "Redhat"		Ansible Runner Search vendor "Redhat" for product "Ansible Runner"				2.1.0 Search vendor "Redhat" for product "Ansible Runner" and version "2.1.0"		alpha2		Affected
Redhat Search vendor "Redhat"		Ansible Runner Search vendor "Redhat" for product "Ansible Runner"				2.1.0 Search vendor "Redhat" for product "Ansible Runner" and version "2.1.0"		beta1		Affected