CVE-2021-41151 Information

Description

Backstage is an open platform for building developer portals. In affected versions A malicious actor could read sensitive files from the environment where Scaffolder Tasks are run. The attack is executed by crafting a custom Scaffolder template with a github:publish:pull-request action and a particular source path. When the template is executed the sensitive files would be included in the published pull request. This vulnerability is mitigated by the fact that an attacker would need access to create and register templates in the Backstage catalog and that the attack is very visible given that the exfiltration happens via a pull request. The vulnerability is patched in the 0.15.9 release of @backstage/plugin-scaffolder-backend.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Reference

https://github.com/backstage/backstage/security/advisories/GHSA-pvv8-8fx9-h673 https://github.com/backstage/backstage/commit/6968962c920508eae19a4c1c200fa2c8980a4006

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.9