CVE-2021-32662

TechDocs mkdocs.yml path traversal

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Backstage is an open platform for building developer portals, and techdocs-common contains common functionalities for Backstage's TechDocs. In `@backstage/techdocs-common` versions prior to 0.6.3, a malicious actor could read sensitive files from the environment where TechDocs documentation is built and published by setting a particular path for `docs_dir` in `mkdocs.yml`. These files would then be available over the TechDocs backend API. This vulnerability is mitigated by the fact that an attacker would need access to modify the `mkdocs.yml` in the documentation source code, and would also need access to the TechDocs backend API. The vulnerability is patched in the `0.6.3` release of `@backstage/techdocs-common`.

Backstage es una plataforma abierta para construir portales para desarrolladores, y la función techdocs-common contiene funcionalidades comunes para los TechDocs de Backstage. En "@backstage/techdocs-common" versiones anteriores a 0.6.3, un actor malicioso podía leer archivos confidenciales del entorno donde se construye y publica la documentación de TechDocs ajustando una ruta particular para la función "docs_dir" en el archivo "mkdocs.yml". Estos archivos estarían entonces disponibles a través de la API del backend de TechDocs. Esta vulnerabilidad está mitigada por el hecho de que un atacante necesitaría acceso para modificar el archivo "mkdocs.yml" en el código fuente de la documentación, y también necesitaría acceso a la API del backend de TechDocs. La vulnerabilidad está parcheada en la versión "0.6.3" de "@backstage/techdocs-common"

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-05-12 CVE Reserved
2021-06-03 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (3)

URL	Tag	Source
https://github.com/backstage/backstage/releases/tag/release-2021-05-27	Release Notes
https://github.com/backstage/backstage/security/advisories/GHSA-pgf8-28gg-vpr6	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208	2021-06-21

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linuxfoundation Search vendor "Linuxfoundation"		Backstage Search vendor "Linuxfoundation" for product "Backstage"				< 0.6.3 Search vendor "Linuxfoundation" for product "Backstage" and version " < 0.6.3"		-		Affected