CVE-2021-32662
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`.
Does this matter?
Lower severity and a low EPSS score (1.28%). Track it; it rarely justifies an emergency change on its own.
Description
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`.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.28% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- linuxfoundation/backstage
- Source
- security-advisories@github.com
References
- https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208Patch, Third Party Advisory
- https://github.com/backstage/backstage/releases/tag/release-2021-05-27Release Notes, Third Party Advisory
- https://github.com/backstage/backstage/security/advisories/GHSA-pgf8-28gg-vpr6Third Party Advisory
- https://github.com/backstage/backstage/commit/8cefadca04cbf01d0394b0cb1983247e5f1d6208Patch, Third Party Advisory
- https://github.com/backstage/backstage/releases/tag/release-2021-05-27Release Notes, Third Party Advisory
- https://github.com/backstage/backstage/security/advisories/GHSA-pgf8-28gg-vpr6Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.