CVE-2021-21371

Execution of untrusted code through config file

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Tenable for Jira Cloud is an open source project designed to pull Tenable.io vulnerability data, then generate Jira Tasks and sub-tasks based on the vulnerabilities' current state. It published in pypi as "tenable-jira-cloud". In tenable-jira-cloud before version 1.1.21, it is possible to run arbitrary commands through the yaml.load() method. This could allow an attacker with local access to the host to run arbitrary code by running the application with a specially crafted YAML configuration file. This is fixed in version 1.1.21 by using yaml.safe_load() instead of yaml.load().

Tenable para Jira Cloud es un proyecto de código abierto diseñado para extraer datos de vulnerabilidad de Tenable.io y luego generar Tareas y subtareas de Jira en función del estado actual de las vulnerabilidades. Se publicó en pypi como "tenable-jira-cloud". En tenable-jira-cloud versiones anteriores a 1.1.21, es posible ejecutar comandos arbitrarios por medio del método yaml.load(). Esto podría permitir a un atacante con acceso local al host ejecutar código arbitrario ejecutando la aplicación con un archivo de configuración YAML especialmente diseñado. Esto se corrige en la versión 1.1.21 usando la función yaml.safe_load() en lugar de la función yaml.load()

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-22 CVE Reserved
2021-03-10 CVE Published
2023-11-24 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-502: Deserialization of Untrusted Data

CAPEC

References (4)

URL	Tag	Source
https://github.com/tenable/integration-jira-cloud/security/advisories/GHSA-8278-88vv-x98r	Third Party Advisory
https://pypi.org/project/tenable-jira-cloud	Product
https://pyyaml.docsforge.com/master/documentation/#loading-yaml	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/tenable/integration-jira-cloud/commit/f8c2095fd529e664e7fa25403a0a4a85bb3907d0	2021-03-18

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tenable Search vendor "Tenable"		Jira Cloud Search vendor "Tenable" for product "Jira Cloud"				< 1.1.21 Search vendor "Tenable" for product "Jira Cloud" and version " < 1.1.21"		-		Affected